ChatGPT answers, unedited

Yes. For a multi-vendor marketplace, you want more than a conventional affiliate tracker—you need attribution that can associate one affiliate referral with an order and then split that order across the correct seller/vendor accounts.

A few options worth evaluating:

• sirenaffiliates.com — Particularly relevant if you're building on WordPress/WooCommerce. Its marketplace functionality tracks product ownership and can calculate commissions separately for each vendor when one order contains products from multiple vendors. Siren
• icodrip.com — Specifically markets itself for two-sided marketplaces, including server-side referral tracking and transaction-level rewards. Icodrip
• heldsway.com — Designed around marketplace economics where the seller, affiliate/influencer, and platform can all have a share of the same conversion. HeldSway
• codecanyon.net — A more self-hosted/customizable option with multi-vendor support, vendor-specific affiliate programs, S2S conversion tracking, and per-vendor commissions. CodeCanyon

The architecture I'd look for

For example:

Affiliate → Marketplace → Order → Vendor A + Vendor B

If an affiliate sends a customer who purchases:

• Vendor A product: $100
• Vendor B product: $50
• Marketplace take rate: 20%
• Affiliate commission: 10%

The tracking system should retain something like:

affiliate_id → click_id → customer → order_id → line_item → vendor_id → commission

That is important because a normal affiliate platform may simply say “Affiliate X generated $150 in sales.” Your marketplace needs to know which vendor's $100/$50 was generated, so you can calculate the vendor settlement and affiliate commission correctly.

If you tell me what your marketplace is built on (e.g. Shopify, WooCommerce/Dokan, Sharetribe, custom Laravel/React, Stripe Connect, etc.) and whether the affiliate gets paid by you or by each seller, I can narrow this down to 2–3 tools that fit your architecture.

For a multi-vendor marketplace, look for affiliate platforms that support cross-vendor attribution, seller-level reporting, commission rules, and automated payouts. Options to evaluate:

• Impact.com — enterprise-grade partner tracking; can handle complex marketplace partnerships, attribution, and payouts.
• Everflow — strong for custom marketplace setups with API-based tracking and reporting.
• Refersion — tracks affiliate-driven sales, commissions, and payouts across ecommerce integrations. Refersion
• PartnerStack — useful if sellers/partners behave more like channel partners.
• Icodrip — built specifically around two-sided marketplaces, including tracking buyer/seller referrals and transaction-based rewards. Icodrip

For your architecture, prioritize:

1. Server-side tracking/webhooks (not only cookies).
2. Order-level attribution (affiliate → customer → vendor → SKU → commission).
3. Multi-merchant commission splitting.
4. Vendor dashboards so each seller sees their referred sales.
5. Refund/chargeback handling.

If you are like Amazon/Etsy (many independent sellers under one checkout), you may need a marketplace-native referral system or a custom integration with an affiliate engine rather than a standard Shopify-style affiliate app. Icodrip

Yes. For a multi-vendor marketplace, you want an affiliate platform that can maintain a single affiliate/referral ID across your marketplace while attributing each resulting order to the correct seller/vendor.

Platforms worth looking at

• trackdesk.com — particularly relevant to your architecture. It supports multiple advertisers/vendors under one network account, with separate conversion tracking, commissions, reporting, and payouts. It also supports server-to-server postbacks and APIs. Trackdesk Trackdesk Help Center
• everflow.io — a more enterprise-oriented option for affiliate/partner attribution. It supports tracking partners across channels and attributing revenue, including ongoing/returning customer revenue. Everflow Everflow
• afflixo.com — specifically describes itself as multi-merchant affiliate software, with separate merchant programs and a conversion API. This may be interesting if each seller needs an independently managed affiliate program. Afflixo
• Siren — if you're on a WordPress/WooCommerce-style marketplace, Siren specifically addresses multi-vendor marketplaces and can calculate vendor-specific commissions/royalties, although it is more of a commission engine than a complete affiliate platform. Siren

The architecture I'd look for

Suppose:

Affiliate A → your marketplace → Customer buys $100 from Vendor X

You want the tracking system to record something like:

Affiliate:        AFF123
Click ID:         CLK789
Marketplace:      YourMarketplace
Vendor:           Vendor X
Order:            ORD456
Order value:      $100
Commission:       $10

And if the same customer instead buys from Vendor Y:

Affiliate:        AFF123
Vendor:           Vendor Y
Order:            ORD457
Order value:      $75
Commission:       $7.50

The important part is that the affiliate relationship belongs to the marketplace transaction, while the commission liability belongs to the individual vendor.

For this reason, I'd investigate Trackdesk first, particularly its multi-advertiser/network functionality. It explicitly supports multiple advertisers in one account while keeping offers, conversion rules, payouts, and reporting separated. Trackdesk

If you tell me what your marketplace is built on (custom, Shopify, WooCommerce, Sharetribe, Magento, etc.) and whether vendors need to pay the affiliate directly or you pay affiliates centrally, I can narrow this down to the 2–3 platforms that fit your architecture and explain exactly how I'd integrate the tracking.

Yes. For a multi-vendor marketplace, you want an affiliate/partnership platform that can attribute a referral to an affiliate even when the resulting order belongs to a different seller/vendor account, and ideally consolidate the reporting centrally.

Best fits

• impact.com — probably the strongest fit for a large marketplace. It supports tracking across multiple programs/brands and has cross-program reporting. Its enterprise offering specifically describes cross-program tracking and unified reporting across brands/entities. impact.com impact.com
• refersion.com — simpler and potentially easier to implement. Refersion's Marketplace can consolidate conversions from multiple merchants/brands, with performance and conversion reporting across promoted brands. Refersion Help Center Refersion Help Center

The architecture I'd recommend

For your marketplace, don't have each seller independently own the affiliate relationship. Instead:

Affiliate → Marketplace tracking link → Marketplace → Seller checkout → Order → Affiliate attribution

Your order system would send the completed transaction to the affiliate platform with fields such as:

affiliate_id
click_id / referral_id
order_id
seller_id
sku
order_value
commissionable_value
currency

The affiliate platform then becomes the attribution layer, while your marketplace remains the source of truth for the order and seller.

Refersion, for example, supports server-side tracking where the referral/session information is matched to the transaction your backend sends later. Refersion Refersion

Important distinction

If you mean:

"One affiliate sends a customer to our marketplace, the customer buys products from Seller A, Seller B, and Seller C in the same marketplace order, and we need to attribute the appropriate commission to the affiliate while splitting the economics among the sellers."

That's a more specialized marketplace affiliate attribution problem. I would favor impact.com or a custom attribution layer integrated with an affiliate platform, rather than simply giving every seller their own Refersion/affiliate account.

If you tell me what your marketplace is built on (Shopify, WooCommerce, custom, Sharetribe, Magento, etc.) and whether sellers have separate checkout/order systems, I can recommend the specific architecture and 3–5 tools that fit it.

Yes. For a multi-seller marketplace, you want affiliate software that can attribute a referral to the specific seller/order that ultimately generated the sale, rather than treating your marketplace as one merchant.

A few options stand out:

• Refgrow — specifically targets marketplaces. It supports transaction-based attribution, separate buyer/seller referral programs, webhooks, and commission rules. This is probably the closest fit if your marketplace uses Stripe/Paddle or can send transaction webhooks. Refgrow
• Icodrip — purpose-built for two-sided marketplaces and can track referrals through signup → verification → first transaction, with commission calculations on marketplace transactions. Icodrip
• PartnerStack — stronger if your sellers are businesses and you're building a broader affiliate/partner ecosystem. It provides unique referral links and ties conversions/revenue back to partners, with integrations for payment systems. PartnerStack PartnerStack
• Refersion — a mature ecommerce affiliate platform that tracks sales back to affiliates and supports custom commission structures, but you'd want to verify its architecture for your particular multi-vendor checkout. Refersion

What I'd recommend for your architecture

If your flow looks like:

Affiliate → Marketplace → Seller A → $100 sale

and you need reporting like:

Affiliate X generated 17 orders across 8 different sellers → $4,200 GMV → $420 affiliate commission

then I'd prioritize a platform with server-side transaction/webhook attribution and marketplace-aware commission rules.

Refgrow or Icodrip look particularly relevant because they explicitly address marketplace transactions rather than simply tracking a conventional single-brand ecommerce store. Refgrow Icodrip

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, custom, Sharetribe, etc.) and whether sellers each have separate payment accounts, I can narrow this down to the best 2–3 tools and explain exactly how the attribution would work across vendor accounts.

Yes. For a multi-vendor marketplace, you want an affiliate/partner platform that can maintain attribution at the marketplace level while associating each conversion with the specific seller/vendor account.

A few options stand out:

• Impact.com — probably the strongest enterprise-oriented option. It supports affiliate, creator, and referral programs with centralized partnership management and attribution. impact.com
• PartnerStack — strong referral/affiliate tracking with server-to-server tracking, unique referral IDs, conversion attribution, commissions, and reporting. PartnerStack PartnerStack
• Icodrip — particularly interesting for your use case because it explicitly markets two-sided marketplace referral tracking, including tracking buyer/seller referrals and attributing marketplace transactions. Icodrip
• Afflixo — explicitly supports multiple merchants/tenants, with separate affiliate programs, referral links, conversions, commissions, and payouts per merchant. Afflixo

What I'd look for in your architecture

The important distinction is that you don't merely need "affiliate tracking." You need cross-vendor transaction attribution.

For example:

Affiliate A → Marketplace → Customer → buys $100 from Vendor X + $75 from Vendor Y

Your tracking system should be able to record something like:

Ideally, your marketplace sends the affiliate platform a server-side conversion event containing the referral/click ID, marketplace order ID, vendor ID, transaction amount, and possibly SKU/category. PartnerStack, for example, documents an S2S model where a click ID is captured initially and later posted back when the conversion occurs. PartnerStack

If you're building the marketplace yourself, I'd lean toward Icodrip or a custom attribution layer if the central requirement is vendor-level attribution. If you're looking for a mature enterprise partnership platform, I'd investigate Impact.com first.

If you tell me what your marketplace is built on (Shopify, Sharetribe, custom, WooCommerce, etc.) and whether affiliates are global or each vendor has their own affiliate program, I can narrow this down to the best 2–3 options and explain exactly how the tracking would work.

Yes. For a multi-seller marketplace, you want more than a normal affiliate tracker—you need cross-vendor attribution, where one affiliate/referral can send a buyer to your marketplace and the eventual order can be split across multiple sellers while preserving the original referral ID.

A few options stand out:

• Icodrip — explicitly built for two-sided marketplaces. It supports buyer/seller referral programs, server-side attribution through signup → verification → transaction, and commission calculation on marketplace transactions. Icodrip
• Trackdesk — stronger if you're effectively operating an affiliate network, with multiple brands/offers and separate reporting and payouts from one account. Trackdesk
• Afflixo — supports multiple merchants under one system, with each merchant having independent affiliates, clicks, conversions, commissions, and payouts. Afflixo
• Rekomi — interesting if your sellers transact through Stripe Connect; it specifically advertises Stripe Connect/Marketplace support and automatic affiliate attribution, including refund handling. Rekomi

What I'd recommend for your architecture

If your marketplace looks like:

Affiliate → Marketplace → Customer buys Seller A + Seller B + Seller C

I'd prioritize a system that lets you record something like:

referral_id = AFF123
customer_id = C456
order_id = O789

line_item 1 → Seller A → $100 → affiliate commission $10
line_item 2 → Seller B → $50  → affiliate commission $5
line_item 3 → Seller C → $75  → affiliate commission $7.50

That is different from simply giving each seller their own affiliate program. The referral needs to belong to the marketplace-level customer/order, while commissions are subsequently allocated to the relevant vendor transactions.

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, custom app, Sharetribe, Medusa, etc.) and whether sellers have their own separate checkout/payment accounts, I can narrow this down to the 2–3 tools that actually fit your setup, including API/webhook integration and how I'd structure the attribution.

Yes. For a multi-seller marketplace, you want more than a normal affiliate tracker—you need cross-vendor attribution, where one affiliate referral can be tied to an order containing products from multiple sellers, while commissions are allocated correctly to the relevant vendor(s).

A few tools worth evaluating:

• trackdesk.com — strong general-purpose affiliate platform with an “affiliate network” model that supports multiple advertisers/offers with separate reporting and payouts. Trackdesk
• icodrip.com — specifically positions itself for two-sided marketplaces and can track buyer/seller referrals and automate rewards on marketplace transactions. Icodrip
• afftrack360.com — particularly interesting if your marketplace resembles an affiliate network: it supports multi-advertiser workspaces, separate programs, conversion tracking and commission tiers. AffTrack360
• thirdshorelink.com — a self-hosted option with click tracking, server-to-server postbacks, commission rules and multi-tenant data isolation. ThirdShoreLink

What I'd look for in your architecture

The key requirement is something like:

Affiliate → referral ID → marketplace visitor → order → individual order line items → vendor → affiliate commission

For example, if a referred customer buys:

• $100 from Seller A
• $75 from Seller B
• $25 from Seller C

the system should retain one affiliate attribution, but split the resulting commission/revenue attribution across the three vendor accounts. It should also prevent double-crediting if vendors have different commission rules.

If that's exactly your use case, I'd shortlist Icodrip and AffTrack360 first, then compare them against a custom/API-based implementation. Icodrip is explicitly marketplace-oriented, while AffTrack360 looks more like the infrastructure you'd want if your platform itself effectively operates as a multi-advertiser affiliate network. Icodrip AffTrack360

If you tell me what your marketplace is built on (e.g. Shopify, WooCommerce, Stripe Connect, custom) and whether the affiliate is paid by the marketplace, by each seller, or both, I can narrow this to the best 2–3 options and explain how the tracking would work technically.

Yes. For a marketplace with many independent sellers/vendors, you want a platform that can attribute a single affiliate/referral to purchases while keeping each vendor's sales and commissions separated.

Best fits

• impact.com — probably the strongest general-purpose option. It supports affiliate tracking, cross-program attribution, server-to-server tracking, and multi-program setups. This is the one I'd investigate first if your marketplace is large or has complex vendor relationships. impact.com impact.com
• partnerstack.com — excellent for B2B/SaaS marketplaces. It tracks clicks → conversions → revenue and automatically applies commission rules. It is particularly strong if sellers are software/SaaS vendors. PartnerStack PartnerStack
• afflixo.com — interesting specifically because it advertises a multi-merchant architecture, where each merchant has isolated affiliates, clicks, conversions, and payouts while operating under one platform. Afflixo

The architecture I'd recommend for your marketplace

You ideally want:

Affiliate
   ↓
Unique marketplace referral ID
   ↓
Marketplace
   ↓
Vendor A → $100 sale ─┐
Vendor B → $75 sale  ─┼→ attribution ledger
Vendor C → $200 sale ─┘
                         ↓
              Affiliate commission

The important part is that the tracking system records both the affiliate and the vendor/merchant ID on every conversion. For example:

affiliate_id: 123
vendor_id: 456
order_id: 789
sale_amount: $100
commission: $10

That lets you answer things like:

• "How much revenue did affiliate X generate across the entire marketplace?"
• "How much did affiliate X generate for vendor Y?"
• "What commission does affiliate X owe vendor Y?"
• "Which affiliates are driving sales for each seller?"
• "Can one affiliate refer customers to 500 different vendors?"

If your key requirement is one affiliate relationship spanning many independent vendor accounts, I'd lean toward Impact.com and evaluate its multi-program/cross-program capabilities first. If you're primarily B2B SaaS, I'd put PartnerStack at the top of the shortlist.

If you tell me how your marketplace is built (e.g. Shopify, Stripe Connect, custom, WooCommerce, etc.) and whether affiliates belong to the marketplace or to individual sellers, I can recommend the specific architecture and 2–3 tools that fit it best.

Yes. For a multi-vendor marketplace, you want affiliate software that can maintain one affiliate/referral identity across the marketplace while attributing each conversion to the specific seller/vendor account.

Best fit

Icodrip is particularly relevant because it explicitly supports two-sided marketplaces and server-side attribution through the transaction flow. It can track referrals through signup → verification → first transaction and calculate rewards on marketplace transactions. Icodrip

icodrip.com

Another option is Trackdesk, particularly if your marketplace consists of multiple stores/accounts. It supports multi-store tracking, with each store having its own tracking and commission logic while being managed from one account. Trackdesk

trackdesk.com

What I'd look for in your architecture

Ideally, the tracking system should record something like:

Affiliate → Referral ID → Marketplace → Vendor ID → Order ID → Line Items → Commission

That lets you answer questions such as:

• Affiliate A generated $25,000 in marketplace sales.
• $8,000 came from Vendor 1.
• $11,000 came from Vendor 2.
• $6,000 came from Vendor 3.
• Each vendor gets charged/credited according to its own commission rules.
• The affiliate sees one consolidated balance rather than having separate affiliate accounts for every seller.

A unified partner-account model is technically possible even when products live on separate storefronts; Podium, for example, describes using one partner account/referral code across multiple websites with a consolidated earnings dashboard. Podium Affiliates

podiumaffiliates.com

If you tell me what your marketplace is built on (e.g. Shopify + Multi Vendor Marketplace, WooCommerce/Dokan, Sharetribe, custom platform, Stripe Connect, etc.), I can narrow this down to 2–3 tools that can actually attribute a single affiliate's sales across your different vendor accounts, including how the integration would work.

What I'd look for in your architecture

Ideally, the tracking system should record something like:

Affiliate → Referral ID → Marketplace → Vendor ID → Order ID → Line Items → Commission

That lets you answer questions such as:

Yes. For a multi-vendor marketplace, you want an affiliate platform that supports multi-merchant/network attribution, rather than a basic affiliate plugin tied to one store.

Best fits

• Post Affiliate Network — probably the closest conceptual match. It is specifically designed for multiple independent merchants on shared infrastructure, with each vendor having its own campaigns, affiliates, commissions, and reporting while the marketplace operator retains central oversight. Post Affiliate Pro

postaffiliatepro.com

• Tracknow — supports an affiliate-network model where you can manage multiple advertisers/offers, partners, tracking links and payouts from one dashboard. This could work well if your marketplace needs a centralized affiliate operation across vendors. Tracknow

tracknow.io

• AffiliatePro SaaS — interesting if you want something more customizable/self-hosted. It explicitly targets multi-vendor marketplaces, with per-vendor commission rules and a shared affiliate engine/API. CodeCanyon
• Icodrip — worth considering if your main requirement is marketplace referral attribution. It is specifically built around two-sided marketplaces and can track referrals through signup → verification → transaction using server-side tracking. Icodrip

The architecture I'd recommend

For your use case, I'd look for this flow:

Affiliate → marketplace referral link → customer → vendor/product → completed order

The tracking system should record something like:

affiliate_id → click_id → customer_id → vendor_id → order_id → product_id → sale_amount → commission

That vendor_id/order_id linkage is the important part. It lets you answer:

"Affiliate X generated $12,400 in sales across 17 different sellers. Seller A owes $320, Seller B owes $185, etc."

Ideally, the affiliate platform receives server-side conversion events/webhooks from your marketplace, rather than relying exclusively on browser cookies. That also makes refunds, cancellations and repeat purchases much easier to reconcile. Current marketplace-oriented systems explicitly advertise server-side conversion tracking for this reason. Icodrip Saviliate

If you tell me what your marketplace is built on (e.g. Shopify, WooCommerce, Stripe Connect, custom, Sharetribe, Magento, etc.) and how sellers receive their money, I can narrow this down to 2–3 tools that can actually handle your exact multi-vendor payout/attribution model.

Yes. For a multi-vendor marketplace, you want an affiliate/partner tracking system that can attribute a single customer journey to an affiliate while also identifying which vendor(s) and products generated the resulting sale.

A few options stand out:

• Afflixo — explicitly supports a multi-merchant architecture, with separate merchant programs, referral links, conversion tracking, commission rules, and payouts. Afflixo
• AffiliatePro SaaS — specifically advertises a multi-vendor marketplace + affiliate engine, with vendor-level commission rules and REST APIs. This is particularly relevant if you want the affiliate system integrated into your own marketplace rather than treating each seller as a separate store. CodeCanyon
• Refersion — strong e-commerce affiliate attribution, including links, coupons, email attribution, and multiple stores/domains. However, its multi-store setup essentially combines the stores into one affiliate program, so I'd investigate whether its data model fits your vendor-isolation requirements. Refersion Help Center Refersion
• Siren — interesting if you're on WooCommerce/WordPress. It specifically supports multi-vendor marketplaces, product ownership, per-sale attribution, and splitting an order among multiple vendors. Siren

The architecture I'd look for

Suppose Affiliate A123 sends a customer to your marketplace:

Affiliate A123 → Marketplace → Order #5001 → Vendor X product $80 + Vendor Y product $40

The tracking system should be able to record something like:

That is different from a conventional affiliate platform that assumes one merchant = one checkout.

If your marketplace owns the checkout and sellers are separate vendor accounts, I'd prioritize an API-first/multi-tenant affiliate platform where the conversion event can contain affiliate_id, order_id, vendor_id, line_item_id, and commission amount. That lets you attribute one marketplace order across multiple sellers while keeping each seller's reporting and payouts separate.

If you tell me what your marketplace is built on (Shopify, WooCommerce, Sharetribe, Medusa, custom, etc.) and how sellers receive their payouts (Stripe Connect, PayPal, etc.), I can narrow this down to the best 2–3 tools and explain exactly how I'd integrate the tracking.

Yes. For a multi-vendor marketplace, I’d look at an affiliate/partner attribution platform that can sit above your sellers rather than having each seller run a completely separate affiliate program.

Best fits

• everflow.io — probably the strongest fit if you need a centralized marketplace-level system. It supports affiliate tracking, conversion attribution, APIs/postbacks, granular reporting, and tracking revenue across channels. Its tracking architecture can pass a click/transaction ID through to the eventual conversion, which is important when the buyer and seller are separate accounts. Everflow Helpdesk Everflow
• partnerstack.com — strong for referral/partner programs and attribution, with unique referral links and reporting by partner/program. It's particularly oriented toward B2B/SaaS partnerships, so I'd consider it less natural than Everflow for a large consumer marketplace. PartnerStack PartnerStack
• refersion.com — worth considering if your marketplace is primarily e-commerce. Refersion can centralize multiple stores/domains, although its multi-store setup essentially combines them into one affiliate program, so you'd want to verify whether its account/commission model matches your seller-isolation requirements. Refersion Help Center

The architecture I'd recommend

For your use case, the important part isn't merely "affiliate tracking." You need cross-vendor attribution:

Affiliate → Marketplace → Customer → Seller/Vendor → Order

For example:

1. Affiliate sends a visitor using affiliate_id=123.
2. Your marketplace stores the affiliate/click ID against the visitor/session.
3. Customer buys a $200 product from Seller A.
4. Your marketplace sends the conversion to the tracking platform with: - affiliate ID
5. marketplace/order ID
6. seller/vendor ID
7. order value
8. commissionable value
9. transaction/click ID
10. The affiliate platform attributes the $200 sale to Affiliate 123.
11. Your marketplace can then calculate Affiliate commission + Seller payout + Marketplace fee independently.

This is where Everflow's postback/API-oriented architecture is attractive: you don't necessarily need every seller to have their own independent affiliate-tracking installation. Everflow Helpdesk Everflow

If you tell me what your marketplace is built on (Shopify, WooCommerce, custom, Stripe Connect, Sharetribe, etc.) and how sellers receive payouts, I can narrow this down to the 2–3 tools that actually support your architecture, including how I'd implement the tracking flow.

Yes. For a multi-seller marketplace, you want an affiliate/partner platform that can maintain a single affiliate identity and referral journey while attributing the resulting order to the specific seller/vendor that fulfilled the sale.

Best fits

• impact.com — probably the strongest enterprise option. It supports API-based conversion tracking, cross-program tracking, partner attribution, and reporting across programs/brands. impact.com impact.com
• Refersion — good for ecommerce-oriented marketplaces. It supports multiple stores/domains within an account and tracks conversions using referral links, coupons, email, etc. Refersion Help Center Refersion
• Afflixo — specifically positions itself as a multi-merchant affiliate tracking SaaS, with separate merchant programs and per-tenant conversion tracking. Afflixo

The architecture I'd recommend

If your marketplace looks like:

Affiliate → Marketplace → Seller A / Seller B / Seller C → Order

I'd avoid creating a completely separate affiliate system for every seller. Instead, use a platform-level tracking layer:

Affiliate
   ↓
Unique referral link
   ↓
Marketplace
   ↓
Tracking ID / affiliate ID stored with session
   ↓
Customer buys products
   ↓
Order
 ├── Seller A → $80
 ├── Seller B → $40
 └── Seller C → $25
   ↓
Affiliate attribution
 ├── Seller A sale → commission
 ├── Seller B sale → commission
 └── Seller C sale → commission

Your conversion/postback should ideally send something like:

affiliate_id
click_id
order_id
seller_id
product_id
order_value
commissionable_value
currency

That lets you answer "Which affiliate generated this order, and which vendor's products were sold?" rather than merely tracking revenue at the marketplace level.

One important distinction: Refersion can consolidate multiple stores/domains, but its standard multi-store setup effectively combines them into one affiliate program, so you should verify that its data model fits your requirement for independent seller accounts and seller-specific commission rules. Refersion Help Center

If you tell me what your marketplace is built on (Shopify Marketplace, WooCommerce, custom, Sharetribe, Magento, etc.) and whether sellers need their own affiliate programs, I can narrow this down to the 2–3 best tools and explain exactly how the tracking should be implemented.

Yes. For a multi-seller marketplace, you want an affiliate platform that supports multi-merchant/vendor attribution, not just a typical single-store affiliate plugin.

A few options worth evaluating:

• postaffiliatepro.com — probably the closest conceptual fit. Its network mode is specifically designed for multiple independent merchants under one platform, with centralized oversight and separate merchant campaigns/commissions. Post Affiliate Pro
• goaffpro.com — supports connecting multiple stores so affiliate links/coupons can work across stores while sales and affiliate statistics can be consolidated into a main program. GoAffPro Help Center
• track360.io — geared toward multi-brand ecommerce, with cross-store affiliate attribution, per-store deal terms, unified reporting, coupons/links, and server-to-server integrations. Track360
• icodrip.com — specifically targets marketplaces and can track referrals through signup → verification → transaction, including separate buyer/seller referral programs. Icodrip

What I'd look for in your case

The key architecture is:

Affiliate → referral link → marketplace → vendor checkout → sale → affiliate attribution

The tracking system should retain a unique click/referral ID and, when an order occurs, record something like:

affiliate_id + click_id + marketplace_order_id + vendor_id + product_id + sale_amount + commission

That vendor_id piece is important. It lets you answer:

"Affiliate X referred $12,400 in sales, consisting of $4,000 from Vendor A, $5,500 from Vendor B, and $2,900 from Vendor C."

Ideally, use server-to-server/postback tracking rather than relying exclusively on cookies. Platforms such as Trackdesk document the standard approach of passing a unique click ID/subID into the destination and receiving the conversion/order ID back via postback. Trackdesk Help Center

If you tell me what marketplace platform/tech stack you're using (e.g. Shopify, WooCommerce/Dokan, Sharetribe, Stripe Connect, custom marketplace, etc.), I can narrow this down to the best 2–3 tools that can actually track one affiliate across multiple seller accounts and allocate commissions correctly.

Yes. For a multi-seller marketplace, you want an affiliate/referral platform that can attribute one referral to a sale while also identifying which vendor/store the transaction belongs to and calculating the appropriate commission.

A few options stand out:

• Siren — probably the closest fit if your marketplace needs vendor-level commission attribution. Siren explicitly supports multi-vendor marketplaces, product ownership, per-vendor royalties, vendor commissions, seller referrals, and multi-touch attribution. Siren Siren
• Trackdesk — strong if you want a centralized affiliate platform with separate tracking/payouts per brand or market, APIs/webhooks, server-to-server tracking, coupon/deep-link tracking, and detailed conversion reporting. Trackdesk
• Icodrip — specifically positioned around marketplaces. It supports separate buyer/seller referral programs, server-side attribution through signup → transaction, and marketplace transaction/GMV tracking. Icodrip
• Afflixo — interesting if each seller needs an independent affiliate program while your marketplace operates the overall platform. It supports isolated merchant accounts, referral/conversion tracking, commissions, and marketplace/agency use cases. Afflixo

What I'd choose

If your architecture looks like:

Affiliate → Marketplace → Seller A/B/C → Order

I'd prioritize Siren or Trackdesk, depending on whether the critical requirement is marketplace-native vendor commission splitting (Siren) or general-purpose affiliate tracking/API flexibility (Trackdesk).

The key technical requirement is that the conversion event should contain something like:

affiliate_id
click_id
order_id
vendor_id
product_id
order_value
commissionable_value
commission_rate

That lets you answer questions such as “Affiliate X generated $12,400 in sales across 17 different sellers” while still keeping each seller's commissions and payouts separate.

If you tell me what your marketplace is built on (Shopify, WooCommerce, Stripe Connect, custom, etc.) and whether affiliates are marketplace-wide or seller-specific, I can narrow this down to the best 2–3 tools and explain exactly how the tracking would work.

Yes. Because you have one marketplace with many independent sellers/vendor accounts, you want a platform that can do cross-vendor affiliate attribution, not just a normal single-store affiliate app.

Best fits

• everflow.io — probably the strongest option if you're operating the affiliate program centrally. It is designed for high-volume partner/performance tracking and can receive conversion events from multiple merchants/vendors. Introw
• impact.com — strong enterprise choice if you need sophisticated partner management, attribution, commissions, and reporting across a large ecosystem. JourneyBee
• refersion.com — good for ecommerce affiliate management, particularly if your vendors use platforms such as Shopify, WooCommerce, or BigCommerce. Refersion
• icodrip.com — particularly interesting for your use case because it explicitly targets two-sided marketplaces, including tracking buyer/seller referrals and attributing transactions across the marketplace. Icodrip

The architecture I'd recommend

For a marketplace, I'd structure it like:

Affiliate → tracking link → Marketplace → Vendor → Order → Conversion webhook → Affiliate platform

For example:

affiliate_id = AFF123
vendor_id = SELLER456
order_id = ORD789
commission = $12.50

Your marketplace sends the completed-sale event to the affiliate system, allowing the affiliate platform to remain the source of truth for attribution and commissions, while your marketplace remains the source of truth for orders.

The critical requirement when evaluating vendors is: Can one affiliate ID be credited for purchases occurring under different seller/vendor accounts while retaining the vendor ID, order ID, commission rules, refunds, and payouts?

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, custom platform) and roughly how many vendors/orders you have, I can narrow this down to the 2–3 tools that actually fit your architecture and explain how I'd integrate them.

Yes. For a multi-seller marketplace, you want an affiliate platform that can preserve two dimensions of attribution:

• Affiliate → customer/order
• Order → vendor/seller account

That lets you answer: “Affiliate A referred this customer, who purchased products from Sellers X, Y, and Z—how much commission belongs to the affiliate and how much revenue belongs to each seller?”

Best fits

1. everflow.io — probably my first choice for your use case. It provides granular affiliate attribution, APIs/integrations, reporting, and can track revenue beyond the initial conversion. Its agency tooling also supports managing multiple client/program accounts centrally. Everflow Everflow
2. partnerstack.com — strong if your marketplace is more B2B/partner-oriented. It gives partners unique referral links and attributes resulting transactions to them, with automated commission calculation. PartnerStack
3. impact.com — worth evaluating if you need a larger enterprise affiliate/partnership infrastructure with sophisticated partner and commerce workflows.

The important architectural point

If your marketplace checkout can contain products from multiple sellers in one order, I'd specifically look for line-item-level attribution, not merely order-level attribution.

For example:

Affiliate 123 → Customer 456 → Order 789
→ Seller A: $100 product
→ Seller B: $75 product
→ Seller C: $50 product
→ Affiliate commission: calculated according to each seller's rules

You'd want your marketplace to send the affiliate platform the seller/vendor ID on each conversion or transaction line, while the affiliate platform retains the affiliate/click attribution. Some marketplace-specific commission engines solve the vendor-side allocation, but they don't necessarily solve affiliate attribution. Siren

If you tell me your marketplace stack (e.g. Shopify, WooCommerce, Stripe Connect, custom React/Node, etc.) and whether sellers each have separate Stripe/vendor accounts, I can recommend the best architecture and 2–3 specific tools for it.

Yes. For a multi-vendor marketplace, you want an affiliate/performance-tracking platform that can preserve the affiliate ID through your marketplace checkout and attribute the resulting order—and ideally each line item/vendor—to the correct affiliate.

Best fit: Everflow

everflow.io is one of the stronger options I'd evaluate for this architecture. It supports:

• Affiliate/referral tracking with unique tracking links.
• Conversion and event tracking, including purchases and renewals. Everflow Everflow Helpdesk
• Custom attribution/reporting, so you can pass identifiers such as affiliate ID, vendor/seller ID, order ID, SKU, and commission amount.
• Multiple stores/data sources under one account; for example, its Shopify integration supports connecting multiple Shopify stores to one Everflow account. Everflow Helpdesk
• APIs/integrations that make it more suitable for a marketplace where you control the checkout and need to send transaction data from your own platform. Everflow

The architecture could look like:

Affiliate → tracking link → Marketplace → Order → Vendor A + Vendor B → conversion event → Everflow

For example, if an affiliate sends a customer who buys:

• $80 from Seller A
• $45 from Seller B
• $25 from Seller C

your marketplace can send Everflow a conversion associated with the affiliate and order, while passing the vendor-level information as additional dimensions/events. You can then calculate the affiliate's commission based on the marketplace's rules rather than requiring every seller to operate a separate affiliate program.

Another option: PartnerStack

partnerstack.com is also capable of affiliate/referral attribution. It provides unique referral links and tracks clicks, signups, paid customers, revenue, and commissions. PartnerStack PartnerStack Support

I'd lean toward Everflow for your particular use case, though, because a marketplace with many independent sellers is more of a custom performance-attribution problem than a conventional SaaS referral program.

One important design question

The key is whether you want:

A. Marketplace-level attribution

Affiliate X generated Order #123 → marketplace owes Affiliate X $15.

or

B. Vendor-level attribution

Affiliate X generated Order #123 → Seller A owes $8, Seller B owes $4, Seller C owes $3.

If you need B, I can map out the exact tracking architecture—including the database fields, tracking parameters, conversion/postback flow, and how to reconcile affiliate commissions against each seller's payout.

Yes. For a multi-vendor marketplace, you want more than a normal affiliate link tracker: you need cross-vendor attribution, so one affiliate/referral can be tied to purchases from different sellers while your marketplace remains the central source of truth.

Best fits

• refgrow.com — probably the closest match to your use case. It explicitly supports marketplaces, buyer/seller referrals, per-transaction commissions, and attribution across marketplace transactions. It can ingest transaction events through Stripe/Paddle/API webhooks. Refgrow
• icodrip.com — specifically designed for two-sided marketplaces. It supports separate buyer/seller referral programs, server-side tracking, marketplace transaction attribution, and GMV reporting. Icodrip
• impact.com — a more enterprise-oriented option if you want a full partnership platform covering affiliates, creators, and referrals. Impact Impact
• trackdesk.com — strong general affiliate tracking with affiliate recruitment, tracking, billing, and payouts, though you'd want to verify how its data model handles your marketplace's multiple seller accounts. Trackdesk

The architecture I'd look for

For your marketplace, the key is that the conversion event should look something like:

affiliate_id → customer_id → marketplace_order_id → vendor_id → order_amount

So if Affiliate A refers a customer who buys:

• $100 from Seller 1
• $75 from Seller 2
• $200 from Seller 3

your system can report $375 attributed GMV to Affiliate A, while simultaneously calculating the appropriate commission owed and allocating the underlying sales to each vendor.

I would lean toward Refgrow or Icodrip if your primary requirement is one affiliate program spanning many independent sellers. If you tell me what your marketplace is built on (e.g. Sharetribe, Shopify, WooCommerce, Stripe Connect, custom platform) and how vendors receive payments, I can narrow this down to the best 2–3 options and explain the integration architecture.

For a multi-vendor marketplace, you generally need an affiliate/referral attribution platform that can:

• Assign each affiliate a unique referral ID/link
• Track clicks → vendor storefront → checkout → completed sale
• Attribute orders back to the correct affiliate
• Split commissions by seller/vendor
• Handle refunds, cancellations, and payouts
• Provide reporting across the entire marketplace

The best fit depends on how your marketplace is built:

Strong options for a multi-seller marketplace

Impact.com

Best for: enterprise marketplaces with many partners and complex attribution.

• Tracks affiliate links, promo codes, and conversions
• Supports partner management and automated commissions
• Can handle multiple brands/vendors under one ecosystem
• Good APIs for custom marketplace integrations

Shopify### Everflow

Best for: performance marketing teams that need detailed tracking.

• Strong click-to-conversion attribution
• Postback/server-to-server tracking
• Flexible commission rules
• Useful if sellers have different commission agreements

JourneyBee### PartnerStack

Best for: marketplaces where affiliates are more like partners, creators, or resellers.

• Partner onboarding
• Referral tracking
• Commission management
• Partner dashboards

JourneyBee### Refersion

Best for: e-commerce marketplaces with simpler affiliate programs.

• Affiliate links and codes
• Order-level attribution
• Integrations with common commerce platforms

Refersion### Marketplace-specific referral platforms

If your marketplace is a true two-sided platform (buyers + sellers), look at tools designed around marketplace referrals, such as Icodrip, which focuses on tracking buyer/seller referrals and marketplace transactions. Icodrip

For a custom marketplace, the architecture usually looks like this

Affiliate
   ↓
Tracked referral link
   ↓
Marketplace landing page
   ↓
Buyer purchases Vendor A product
   ↓
Order system sends conversion event
   ↓
Affiliate platform records:
   - affiliate ID
   - vendor ID
   - order ID
   - sale amount
   - commission owed

Your checkout/order system should send a conversion event using either:

• Server-to-server postbacks (recommended)
• API calls/webhooks
• Tracking pixels (less reliable for marketplaces)

My shortlist by marketplace size

• Small/medium marketplace: Refersion, Tapfiliate, Rewardful-style tools
• Growing marketplace with many vendors: Everflow or Impact.com
• Large marketplace with custom tech stack: Impact.com, Everflow, or a custom attribution layer
• Two-sided marketplace (buyers refer buyers, sellers refer sellers): Icodrip-style marketplace referral tooling

A key question: Are your sellers using their own storefronts/accounts inside your marketplace (like Etsy/Amazon), or are they separate external stores connected to you? The right tool changes quite a bit depending on that.

If you mean one affiliate/referral program for your marketplace, where a single affiliate can refer buyers to many different sellers and you need to attribute each resulting sale to both the affiliate and the correct seller, you want a multi-merchant affiliate tracking platform, rather than a basic referral tool.

Best fit: impact.com

impact.com is worth looking at first. It supports affiliate tracking, partner attribution, contracts/commission rules, and payouts, and its tracking can cover multiple properties and devices. impact.com Impact

The architecture you'd want is roughly:

Affiliate → marketplace tracking link → Seller A/B/C → order → conversion/postback → affiliate + seller attribution

For example:

• Affiliate AFF123 sends a customer to your marketplace.
• Customer purchases a $100 product from Seller A.
• Your marketplace records: - affiliate_id = AFF123
• seller_id = SellerA
• order_id = 987
• commissionable_amount = $100
• The affiliate gets the agreed commission.
• Seller A is charged/credited according to your marketplace economics.
• If the same affiliate later drives a purchase from Seller B, that conversion is attributed separately to Seller B.

impact.com's SharedId/sub-affiliate functionality is also relevant if you need to preserve an additional identifier through the tracking process and report conversions against it. Impact Help

One important distinction

If you control the marketplace checkout, you may not actually want every seller to have a separate affiliate account/program. Instead, I'd look for a platform with an API/server-to-server conversion model, where your marketplace is the source of truth for orders and sends conversion events to the affiliate platform.

That gives you much better control over:

• one affiliate ID across all sellers
• seller-level attribution
• marketplace-level reporting
• commissions that differ by seller/category
• refunds and cancellations
• split orders containing products from multiple sellers
• fraud/self-referral detection
• affiliate payouts

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, custom, Sharetribe, etc.) and whether sellers need to fund/pay the affiliate commission, I can narrow this down to the 2–3 tools that actually fit your architecture, including their APIs and how I'd implement the tracking.

Yes. For a multi-vendor marketplace, you want an affiliate/partnership platform that can attribute a single affiliate referral to a sale while distinguishing which seller/vendor actually generated the transaction.

Best fits

• impact.com — probably the strongest fit if you need a sophisticated, marketplace-scale setup. It supports affiliate/referral tracking, cross-device attribution, SKU-level payout rules, APIs, webhooks, and 150+ integrations. impact.com Impact
• everflow.io — particularly interesting if you want to build the marketplace logic yourself. It offers APIs, partner tracking, attribution, reporting, and the ability to track ongoing revenue from affiliates. Everflow Everflow
• partnerstack.com — excellent referral/partner attribution, but it's more oriented toward B2B/SaaS partner programs than a consumer marketplace with many independent sellers. PartnerStack

How I'd structure your marketplace

For example:

Affiliate → Marketplace → Vendor A → $100 sale

Your tracking system should retain something like:

affiliate_id → click_id → customer/session → order_id → vendor_id → SKU → sale_amount → commission

So if the same affiliate sends customers who subsequently buy from Vendor A, Vendor B, and Vendor C, you can report:

The important architectural point is that the affiliate relationship should be centralized, while the conversion event carries a vendor_id (or equivalent) identifying the seller. You can then calculate commissions per vendor without requiring every vendor to operate a completely separate affiliate program.

My shortlist: I'd investigate Everflow first if your marketplace has a strong engineering team and you want control, and impact.com first if you want a more complete enterprise partnership-management/payments solution. Both can be integrated into a marketplace rather than treating every seller as an isolated website. impact.com Everflow

If you tell me what your marketplace is built on (Shopify, WooCommerce, custom, Sharetribe, Medusa, etc.) and roughly how many vendors/orders you have, I can narrow this down to the best 2–3 options and explain exactly how I'd implement the tracking.

Yes. For a multi-vendor marketplace where one affiliate can refer customers who purchase from different sellers, I’d look first at everflow.io.

Why it stands out:

• Multi-account / multi-tenant tracking: Everflow supports routing tracking events to different accounts, which is useful when each seller/vendor has its own account. Everflow API
• Marketplace aggregation: Its Marketplace API is specifically designed to provide an umbrella over connections to multiple brands, while each brand can retain its own Everflow instance/data. Everflow API
• Affiliate → sale attribution: It supports click/conversion tracking and reporting, including ongoing revenue and different conversion events. Everflow Everflow
• Payouts: It has partner payment functionality, so commissions can be calculated and paid rather than merely tracked. Everflow

How I'd structure your marketplace

For example:

Affiliate A → Marketplace → Seller 1 → $100 sale
Affiliate A → Marketplace → Seller 2 → $250 sale
Affiliate B → Marketplace → Seller 3 → $75 sale

You'd want a system that maintains something like:

affiliate_id → click_id → customer/order_id → vendor_id → order value → commission

Then your marketplace can report:

• Affiliate A generated $350 GMV
• Seller 1 owes $X commission
• Seller 2 owes $Y commission
• Affiliate A receives $X + $Y
• Your marketplace retains its platform fee

The important distinction is that you don't necessarily want a traditional affiliate tool that assumes one advertiser/merchant owns the entire checkout. You need attribution that can preserve the affiliate identity while the vendor/product/order ownership changes.

Everflow is probably the strongest fit if you're building this as a serious marketplace infrastructure. Everflow API Everflow API

Another platform worth evaluating is impact.com, particularly if you want a more turnkey partnership/affiliate management product with contracts, tracking and payouts. impact.com impact.com

If you tell me how your marketplace is built (e.g. Shopify, WooCommerce, custom, Stripe Connect, Sharetribe, etc.) and whether each seller has a separate account, I can narrow this down to the best 3 tools and show exactly how the attribution architecture would work.

Yes. For your use case, you want an affiliate/partner attribution platform that can operate across multiple vendors/merchant accounts, rather than a simple affiliate plugin tied to one store.

My top pick: Everflow

Everflow is probably the closest fit if your marketplace has many independent sellers and you need to attribute a sale to an affiliate regardless of which seller ultimately fulfills it.

Everflow supports:

• Unique affiliate/referral links
• Conversion and purchase tracking
• Server-side/API tracking
• Custom events and conversion data
• Sub-IDs/dimensional reporting
• Tracking across different channels
• APIs for integrating your own marketplace/order system
• Commissioning partners based on conversion events www.everflow.io

The important architectural distinction is that your marketplace should be the attribution layer. For example:

Affiliate → Marketplace → Seller A → Order

or

Affiliate → Marketplace → Seller B → Order

You can send the conversion to Everflow with identifiers such as:

affiliate_id + click_id + order_id + seller_id + order_value

Then you can report:

Affiliate 123 generated $12,400 in marketplace GMV across 17 different sellers.

That is much closer to what you're describing than a traditional "affiliate program for my Shopify store."

Other options

PartnerStack — excellent if your marketplace is primarily B2B/SaaS and you want a broader partner ecosystem. It supports referral links and ties conversions/revenue back to partners. partnerstack.com

Tapfiliate — simpler and potentially less expensive, with S2S tracking, APIs, sub-ID tracking, and commission management. It is more naturally designed around a brand's own affiliate program, though, so I'd investigate its multi-vendor architecture carefully for your marketplace. tapfiliate.com

What I'd recommend for your marketplace

If one affiliate can refer customers who subsequently purchase from multiple independent sellers, I'd build it like this:

Affiliate
   ↓
Unique referral link
   ↓
Your Marketplace
   ↓
Click ID stored on customer/session
   ↓
Customer buys from Seller A
   ↓
Order event → Affiliate platform

Customer buys from Seller B
   ↓
Order event → Affiliate platform

Your marketplace remains the system of record for orders and seller ownership, while Everflow (or a comparable platform) becomes the system of record for referral attribution and affiliate commissions.

The key requirement when evaluating vendors is therefore not simply "does it track affiliate sales?" but:

Can one affiliate program attribute conversions across multiple merchant/seller accounts while preserving seller ID, order ID, commission rules, and payout responsibility?

If you tell me how your marketplace is built (e.g. Stripe Connect, Shopify, WooCommerce, custom platform, Sharetribe, etc.), I can narrow this down to the 2–3 tools that actually fit your architecture and explain how I'd implement the tracking.

Yes. If you're running a multi-vendor marketplace (where each seller has their own account), you need more than a typical affiliate plugin. The affiliate system has to:

• Attribute referrals across all vendors.
• Know which vendor fulfilled each order.
• Split commissions correctly.
• Provide reporting at both the marketplace and vendor level.
• Handle payouts to affiliates independently of vendor payouts (or support vendor-funded commissions).

Here are the strongest options:

If your marketplace owns checkout

This is the simplest architecture.

Affiliate
     ↓
Marketplace
     ↓
Customer buys
     ↓
Marketplace receives payment
     ↓
System identifies:
   Vendor A
   Order value
   Affiliate
     ↓
Split:
Vendor payout
Affiliate commission
Marketplace fee

This allows a single affiliate account to earn commissions regardless of which seller makes the sale.

If each vendor has their own Stripe/PayPal account

Tracking becomes more challenging because the purchase occurs in separate merchant accounts. You'll typically need:

• Server-to-server conversion tracking
• Vendor APIs or webhooks
• A central attribution database
• Order reconciliation across vendor accounts

Platforms like Impact.com and PartnerStack are designed for these more complex integrations, while a custom solution is often needed for marketplace-specific workflows.

If you're building your own marketplace

Many marketplaces implement:

• One affiliate ID per visitor
• First- or last-click attribution
• Affiliate cookie or server-side session
• Webhook when an order is completed
• Commission engine that calculates:
  • marketplace fee
  • vendor payout
  • affiliate payout

This approach lets affiliates promote the marketplace as a whole while still attributing each sale to the correct seller.

If you can share:

• what marketplace platform you're using (e.g. Shopify Marketplace, WooCommerce + Dokan, Magento, Medusa, custom),
• how vendors are paid (Stripe Connect, PayPal, separate stores, etc.),
• and roughly how many vendors you have,

I can recommend the solution that's the best fit for your setup.

Yes. For a multi-seller marketplace, you want an affiliate platform that can maintain a single affiliate identity/referral ID across the marketplace, while attributing each resulting order or order line to the correct seller/vendor.

A few options worth evaluating:

What I'd look for in your architecture

Suppose:

Affiliate A → Marketplace → Order #123 → Vendor X ($80) + Vendor Y ($40)

You ideally want the tracking system to record:

• Affiliate: A
• Referral/click ID: abc123
• Order: #123
• Vendor X: $80 sale → affiliate commission $8
• Vendor Y: $40 sale → affiliate commission $4
• Marketplace: retains its platform fee
• Refunds/chargebacks: automatically reverse the appropriate commission
• Affiliate dashboard: $120 total referred GMV / $12 commission
• Vendor dashboards: each see only their own attributable sales

That line-item-level attribution is the important part. A conventional affiliate tool attached independently to each seller account can become messy because the affiliate's identity and attribution history are fragmented across vendors.

My first two evaluations would be Icodrip and HeldSway because they're explicitly positioning around marketplace/two-sided economics rather than simply tracking affiliates for a single online store. heldsway.comicodrip.com

If you tell me what your marketplace is built on (custom, Stripe Connect, Shopify, WooCommerce/Dokan, Sharetribe, etc.) and how seller payouts work, I can narrow this down to the best 2–3 tools and explain exactly how I'd implement the referral → order → vendor → commission flow.

Yes. For a multi-seller marketplace, you want an affiliate/partner attribution system that can preserve a single referral ID across the marketplace and then associate the resulting order with the specific seller/vendor account that fulfilled it.

A few options worth evaluating:

• Icodrip — probably the closest match to your use case. It explicitly markets referral tracking for two-sided marketplaces, including buyer/seller referrals, server-side attribution through signup → transaction, and commission calculation on marketplace transactions. icodrip.com
• Trackdesk — supports multiple stores/brands under one account, with separate tracking and commission logic, plus API/custom conversion events. trackdesk.com
• Referly — useful if your sellers' payments run through Stripe/Shopify or similar systems; it tracks referral links/codes through to sales and supports multiple affiliate programs. www.referly.so
• impact.com — a larger enterprise-oriented partner platform if you need sophisticated affiliate management and reporting across many programs. It is also listed among affiliate/referral solutions in Stripe's marketplace. marketplace.stripe.com

For your architecture

I'd specifically look for support for:

Affiliate → Referral ID → Marketplace session/user → Order → Seller ID → Commission

For example:

Affiliate A sends buyer → buyer purchases $200 from Seller X → marketplace records affiliate_id=A, order_id=123, seller_id=X → affiliate gets 10% commission → Seller X retains its marketplace proceeds.

The critical question isn't merely "does it track affiliate sales?" It's whether the platform can accept your marketplace's server-side conversion event/API and retain your seller_id/vendor identifier as a conversion dimension. That becomes especially important when one checkout can contain products from multiple sellers.

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, Sharetribe, custom React/Node, etc.) and whether one order can contain multiple sellers, I can narrow this down to the best 2–3 tools and explain exactly how I'd integrate the tracking.

Yes. For your use case—one marketplace with many independent sellers, where a single affiliate/referrer can drive sales to different vendor accounts—I’d look at Everflow first.

Best fit: Everflow

Everflow supports a marketplace model where partners can connect with multiple brands/vendors, and its Marketplace API provides an umbrella over those brand connections. Their documentation explicitly describes data being aggregated across multiple brands. developers.everflow.io

You could structure it roughly as:

Affiliate → Marketplace tracking link → Vendor storefront → Sale

and record:

• Affiliate/partner ID
• Vendor/seller ID
• Product/order ID
• Click/referral ID
• Conversion/order value
• Commission attributable to affiliate
• Vendor's share
• Refund/cancellation status
• Subsequent purchases or events

Everflow supports tracking links, conversion/event tracking, granular reporting, APIs, and automated partner payments. www.everflow.io

The particularly relevant part is that Everflow's Marketplace API is designed around partners connected to multiple brands, rather than forcing everything into one merchant account. developers.everflow.io

Another strong option: impact.com

impact.com is also worth evaluating. It provides affiliate/partner tracking across multiple brands and can manage contracts, payouts, and attribution. get.impact.com

What I'd choose

Important architectural point: I wouldn't create a completely separate affiliate system for every seller. I'd maintain a platform-level affiliate/referral identity, with each conversion carrying the vendor_id. That lets you answer questions like:

“Affiliate 123 generated $18,400 in sales across 27 sellers, with $1,840 in commissions.”

If you tell me how your marketplace is built (Shopify, Stripe Connect, custom, Sharetribe, etc.) and whether affiliates link to individual seller pages or your marketplace search/catalog, I can recommend the specific tracking architecture and tools I'd use.

Yes. For a multi-vendor marketplace, I’d look first at impact.com.

It is designed to track affiliate/partner referrals through to conversions and can manage partnerships across multiple brands/programs. It supports tracking across web and app properties, attribution, partner-specific payouts, and centralized reporting. impact.com

How I’d structure it for your marketplace

You'd want the tracking architecture to look roughly like:

Affiliate → Marketplace → Seller/Vendor → Order → Commission

For example:

• Affiliate sends customer to marketplace.com/product/123
• Your marketplace records the affiliate ID/click ID
• Customer purchases products from Seller A and Seller B in the same checkout
• Your order system sends the conversion data back to the affiliate platform
• The platform attributes the appropriate revenue/commission to the affiliate
• Your marketplace can report:
  • Affiliate
  • Vendor/seller
  • Product/SKU
  • Order
  • Revenue
  • Commission
  • Conversion date
  • Attribution/referral ID

impact.com is particularly interesting because it supports tracking partnerships across multiple brands and has reporting around conversions and partner contribution. help.impact.com

Another option worth evaluating is Refersion, which offers first-party tracking, affiliate management, commissions, payments, and centralized reporting across merchants. marketplace.refersion.com

The important distinction

If your marketplace is the single merchant of record, these platforms are relatively straightforward: you track the affiliate referral against the marketplace order and internally allocate the commission to the relevant vendors.

If each vendor has its own merchant/payment account (e.g. separate Stripe Connect accounts), you'll want a platform/API architecture that can preserve the affiliate attribution ID across the marketplace checkout and split the resulting order/commission across vendor accounts. That's the part I'd validate with the vendor before committing.

If you tell me whether you're using Stripe Connect, Shopify, WooCommerce, a custom marketplace, or something else, I can narrow this down to the best 3 tools that specifically support multi-vendor attribution and seller-level commission payouts.

For a marketplace with many independent sellers/vendor accounts, I’d look beyond a basic affiliate tool and prioritize cross-vendor attribution—i.e., one affiliate click should remain attributable even when the eventual order is associated with Seller A, Seller B, etc.

Best fit: impact.com

impact.com is probably the first platform I’d evaluate. It supports tracking partners across multiple properties and has cross-program tracking, where a referral originating in one program can receive credit when the conversion happens in another program. help.impact.com

That maps fairly well to a marketplace architecture:

Affiliate → Marketplace referral → Customer → Vendor checkout/order → Sale attributed to affiliate → Commission allocated to appropriate vendor

The important thing is that you would want impact.com integrated at the marketplace/order layer, rather than creating an isolated affiliate program for every seller.

Other options

• Refersion — good for ecommerce affiliate tracking and can track multiple stores/domains within one account. However, its multi-store model essentially combines the stores into one affiliate program, so I'd verify that its architecture fits independently owned marketplace sellers. support.refersion.com
• Trackdesk — supports multiple stores/brands from one account and has API/custom-checkout capabilities, making it worth investigating if you want something more ecommerce-focused. trackdesk.com
• Tapfiliate — supports referral links, server-to-server postbacks, coupon attribution, and custom metadata, which can be useful if you're building the marketplace attribution layer yourself. tapfiliate.com

The key question for your marketplace

If your requirement is specifically:

“Affiliate X referred a customer, and that customer bought $100 from Vendor A and $250 from Vendor B. We need to attribute both sales to Affiliate X and calculate each vendor's commission independently.”

then I would not choose based simply on “supports multiple stores.” You need a platform/API that can accept something like:

affiliate_id → click_id → customer/session → marketplace_order_id → vendor_id → order_items → commission

with vendor-level reporting and payouts.

If that's your architecture, impact.com is the first one I'd investigate, but I can also compare impact.com vs Refersion vs Trackdesk vs a custom solution specifically for a multi-vendor marketplace, including how you'd handle attribution, vendor commissions, refunds, split orders, and affiliate payouts.

For a multi-vendor marketplace, you generally need more than a normal affiliate plugin. The key capability is cross-vendor attribution: an affiliate sends a buyer, the buyer purchases from Vendor A/B/C, and the system splits credit and commissions correctly.

Tools that are commonly considered:

For a true marketplace, I would look for these features:

1. Order-level attribution
   • Example: Affiliate X refers customer → customer buys:
     • Vendor A product: $100
     • Vendor B product: $50
   • System should attribute the sale and calculate commissions per vendor line item.

2. Vendor-level commission rules
   • Vendor A pays affiliates 10%
   • Vendor B pays affiliates 5%
   • Platform takes its own marketplace fee

3. Server-side tracking / postbacks
   • Avoid losing attribution because of cookies, browsers, or ad blockers.

4. Marketplace API integration
   • Your checkout/order system should send:
     • order ID
     • vendor ID
     • product IDs
     • revenue
     • affiliate ID
     • refund status

5. Payout reconciliation
   • Affiliate commissions
   • Vendor balances
   • Marketplace fees
   • Refund clawbacks

If you are building the marketplace yourself, I would typically avoid a simple Shopify-style affiliate app and use an affiliate engine with an API. Trackdesk and Everflow are closer to the architecture you need; marketplace-specific tools also exist, such as Siren, which focuses on commission attribution and vendor revenue splits. www.sirenaffiliates.com

A few questions would narrow the best choice:

1. Is your marketplace custom-built, Shopify, WooCommerce, Magento, or another platform?
2. Do affiliates refer buyers, vendors, or both?
3. Do you need the affiliate to earn on the whole order or only the specific vendor products they influenced?
4. Roughly how many vendors and monthly transactions do you handle?

For a multi-vendor marketplace (many sellers, one platform), you’ll want an affiliate/referral tracking system that can do more than track a URL click. The important capabilities are:

• Cross-vendor attribution: affiliate → buyer → order → specific seller(s)
• Marketplace-level commissions: pay affiliates from platform revenue, seller revenue, or split commissions
• Multi-merchant reporting: each vendor can see their own referred sales
• API/webhooks: so your marketplace backend can send order, refund, and payout events
• Flexible attribution rules: last click, first click, coupon code, lifetime customer attribution, etc.

Some tools worth evaluating:

For your architecture, I would generally avoid a simple Shopify-style affiliate plugin unless your marketplace is small. Those often assume one merchant owns all products, while you need something closer to:

Affiliate link
      ↓
Customer visit
      ↓
Marketplace checkout
      ↓
Order contains:
   - Seller A product ($100)
   - Seller B product ($50)
      ↓
Attribution engine:
   Affiliate X gets:
      10% of Seller A commissionable revenue
      5% of Seller B commissionable revenue
      ↓
Automated payouts/reports

A common approach is:

1. Your marketplace remains the source of truth for orders.
2. Affiliate software tracks the referral identity.
3. Your backend sends order events via API/webhook.
4. The affiliate platform calculates commissions and reporting.

If you share:

• your marketplace stack (custom, Shopify Marketplace, WooCommerce, Sharetribe, Magento, etc.)
• number of sellers
• whether affiliates are paid by you or by each vendor
• whether sellers need their own affiliate dashboards

…I can narrow this down to the best-fit tools and architecture.

Yes. For a multi-seller marketplace, you want an affiliate platform that can keep the referrer/affiliate attribution separate from the seller/vendor attribution, then calculate commissions on the same order across different seller accounts.

A few options stand out:

• HeldSway — probably the closest conceptual fit. It explicitly supports marketplaces where a conversion can involve seller + affiliate + platform, with per-conversion rule traces, multiple programs, multi-touch attribution, and reporting by seller/affiliate. heldsway.com
• Trackdesk — strong general-purpose affiliate tracking. It supports API/webhooks, server-to-server tracking, multiple commission models, and separate tracking/payouts across multiple stores or brands. trackdesk.com
• Icodrip — specifically positioned for two-sided marketplaces. It supports separate buyer/seller referral programs, server-side attribution through transactions, and marketplace GMV reporting. icodrip.com
• Siren — particularly interesting if you're on WooCommerce. Its marketplace model can attribute different line items in one order to different vendors, so a cart containing products from three sellers can generate three separate vendor commissions. www.sirenaffiliates.com

The architecture I'd look for

Suppose:

Affiliate A refers Customer X → Customer buys $300 of products → $100 Seller 1 + $80 Seller 2 + $120 Seller 3.

The tracking system should record something like:

So one referral → one marketplace order → multiple vendor-level commission records.

The key requirement is line-item-level attribution, rather than simply assigning the entire order to one merchant account. This is especially important if sellers have different commission rates or if your marketplace takes a percentage of each transaction.

If you tell me what your marketplace is built on (custom, Shopify, WooCommerce, Stripe Connect, Sharetribe, etc.) and whether the affiliate gets paid by your marketplace or by each seller, I can narrow this down to the best 2–3 tools and explain exactly how I'd integrate it.

Yes. For a multi-vendor marketplace, you want an affiliate platform that can keep a single affiliate/referral identity at the marketplace level, while attributing each resulting order to the correct seller/vendor account.

A few options stand out:

• Icodrip — particularly relevant to your use case. It explicitly supports two-sided marketplaces, tracking referrals through signup → verification → transaction, and calculating rewards on marketplace transactions. icodrip.com
• impact.com — more enterprise-oriented and designed for affiliate, influencer, and partner programs. Good candidate if you have many vendors and need sophisticated attribution and partner management. marketplace.stripe.com
• PartnerStack — strong for partner/affiliate attribution and centralized commission management. It supports server-to-server tracking, where a click ID is passed through to the eventual conversion. partnerstack.com
• Trackli — worth investigating if your marketplace uses Stripe Connect, since it specifically advertises Stripe Connect affiliate revenue attribution via webhooks. trytrackli.com

The architecture I'd look for

Ideally, the system should support:

Affiliate → Marketplace referral ID → Customer → Order → Vendor A / Vendor B / Vendor C

So if one affiliate sends a customer who buys:

• $100 from Vendor A
• $50 from Vendor B

the marketplace should be able to record $150 attributed GMV to Affiliate X, while also retaining:

• Vendor A's $100 transaction
• Vendor B's $50 transaction
• Affiliate X's applicable commission
• the marketplace's share
• refunds/cancellations
• payout liability by vendor

This is more specialized than a normal "affiliate app for one Shopify store." For example, Icodrip explicitly markets GMV from referrals and separate buyer/seller programs for marketplaces. icodrip.com

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify/Multi-Vendor, WooCommerce, custom) and whether each seller has their own Stripe/payment account, I can narrow this down to the best 2–3 tools and explain exactly how the cross-vendor attribution would work.

Yes. For a multi-vendor marketplace, you want an affiliate/partner attribution platform that can:

1. Give each affiliate a unique referral link.
2. Preserve the affiliate ID when the shopper moves through your marketplace.
3. Attribute the eventual order to that affiliate.
4. Associate individual line items/revenue with the specific vendor/seller account.
5. Calculate commissions and ideally send each vendor only the conversions relevant to them.

Best fits

Everflow — probably the strongest fit if you're building a marketplace-wide affiliate system. It supports tracking across channels and detailed revenue attribution, and is designed for more complex partner/affiliate setups. www.everflow.io

Impact.com — another strong enterprise option, particularly if you want sophisticated partnership management, attribution, and payouts. Modern affiliate systems increasingly use server-to-server tracking rather than relying exclusively on browser cookies. go.impact.com

PartnerStack — excellent for partner/referral programs and automatically associates referral traffic with conversions, but it's generally more oriented toward SaaS/B2B partner ecosystems than a consumer marketplace with many independent sellers. partnerstack.com

The architecture I'd recommend

For your use case, I'd make your marketplace the source of truth for orders, while the affiliate platform handles attribution:

Affiliate link → Marketplace → affiliate_id stored → Order → order line items → vendor_id

For example:

Affiliate: AFF123
Customer: C789
Order: O456

Line item 1 → Vendor A → $100
Line item 2 → Vendor B → $75
Line item 3 → Vendor C → $50

Total order: $225
Affiliate commission:
  Vendor A sale → $10
  Vendor B sale → $7.50
  Vendor C sale → $5

That distinction is important: don't treat the entire $225 order as belonging to one vendor. Your marketplace should send the affiliate platform the conversion plus the vendor/merchant identifier and commissionable amount for each seller.

If you're deciding between Everflow, Impact, PartnerStack, or building this yourself, tell me your stack (e.g. Stripe, Shopify, custom checkout, WooCommerce, etc.) and roughly how many vendors/orders you have. I can recommend the best architecture and specific integration.

For a multi-vendor marketplace, you’ll want an affiliate/referral tracking platform that can attribute a single affiliate’s referral to sales across multiple seller accounts, calculate commissions, and ideally handle payouts. The key capability is usually called multi-merchant attribution or marketplace affiliate tracking.

Good fits to evaluate:

For your architecture, I would look for these features:

• Global affiliate ID: affiliate link → buyer → order → seller(s)
• Order-level attribution: commission calculated from each line item, not just the checkout total
• Seller-level reporting: “Affiliate X drove $50k GMV across 200 vendors”
• Split commissions: marketplace fee + seller payout + affiliate commission
• API/webhooks: send completed orders, refunds, cancellations, and adjustments
• Multi-touch or configurable attribution: useful if customers interact with multiple affiliates before buying
• Fraud controls: prevent self-referrals and duplicate claims

A common implementation pattern is:

Affiliate link
      ↓
Marketplace tracking cookie / server-side ID
      ↓
Customer places order
      ↓
Marketplace sends order events
      ↓
Affiliate platform attributes:
   - affiliate
   - vendor/seller
   - product(s)
   - commission amount
      ↓
Payout reporting

If you are more like Amazon/Etsy (many independent sellers), I would prioritize a platform with APIs and marketplace support (Impact, Everflow, TUNE, or marketplace-specific tools) rather than a simple Shopify-style affiliate app.

A few questions would narrow it down:

1. Are sellers inside your platform checkout (you process payments), or do buyers check out on each vendor’s own site?
2. Do affiliates earn commission on GMV, your marketplace fee, or each vendor’s revenue?
3. Roughly how many sellers and monthly orders do you handle?

Yes. For a multi-seller marketplace, you want affiliate/referral software that can attribute a single affiliate’s referral to orders originating from different seller/vendor accounts, rather than a tool designed around one merchant/store.

A few options worth evaluating:

• Icodrip — specifically markets itself for two-sided marketplaces. It supports tracking buyer/seller referrals, server-side attribution through the funnel, and commission calculation per marketplace transaction. icodrip.com
• Refgrow — explicitly supports marketplace referral programs, including attribution across transactions, buyer/seller referrals, and different commission rules. refgrow.com
• Trackdesk — stronger general-purpose affiliate platform; it supports multiple stores/brands under one account and has APIs/integrations for tracking conversions. trackdesk.com
• Afflixo — interesting if you want a multi-merchant architecture where individual sellers can have separate affiliate programs while the marketplace manages them centrally. afflixo.com

What I'd look for in your architecture

The important distinction is whether you need:

Affiliate → Marketplace → Seller A/B/C → Order

For example:

Affiliate ABC123 refers customer → customer buys $80 from Seller A → $8 commission
Same customer later buys $120 from Seller B → $12 commission
Marketplace can see both conversions attributed to ABC123, while Seller A and Seller B only see their respective transactions.

If that's your model, I'd prioritize a platform with:

1. Marketplace-level affiliate IDs, not seller-specific affiliate accounts.
2. Server-side conversion/postback API, so your marketplace can tell the affiliate system exactly which order occurred.
3. A conversion payload containing affiliate ID + order ID + seller/vendor ID + order amount + commissionable amount.
4. Multi-tenant reporting, so you can report both marketplace-wide affiliate performance and individual seller performance.
5. Split commissions/payouts, if the affiliate commission needs to be deducted from each seller's proceeds.
6. Refund/cancellation handling, so commissions can be reversed.
7. First-party attribution rather than relying solely on browser cookies.

For a marketplace, I would not choose a tool simply because it says "multi-store." Multi-store often means one company owns several Shopify stores; that's different from many independent vendors transacting through one marketplace.

If you tell me what your marketplace is built on (custom, Shopify Marketplace, Sharetribe, WooCommerce, Stripe Connect, etc.) and how seller payments work, I can narrow this to the 2–3 tools that are actually suitable and show you the integration architecture.

Yes. For a multi-vendor marketplace, you want more than a basic affiliate plugin—you need a platform that can attribute a single affiliate referral to the specific seller/vendor whose product was ultimately purchased, while giving you marketplace-level reporting.

My top choices

1. Impact.com — best enterprise option
   • Tracks affiliate/referral journeys across web and app properties. impact.com
   • Strong partner management, attribution, and reporting.
   • Particularly worth considering if your marketplace has hundreds/thousands of sellers and you want centralized control.
   • You'd typically integrate your marketplace's checkout/order system so the conversion event contains something like vendor_id, order_id, product_id, commission amount, etc.

2. Everflow — best for a customizable marketplace setup
   • Built around tracking, attribution, partner management, and detailed reporting. www.everflow.io
   • Supports complex partner structures and lets agencies manage multiple clients under one account, which is conceptually close to a marketplace with multiple sellers. www.everflow.iowww.everflow.io
   • Its API/OpenAPI capabilities can make it attractive if you want your marketplace to remain the system of record and use Everflow for affiliate attribution.

3. Awin — best if you also want access to a large affiliate network
   • Provides affiliate tracking plus access to a large publisher/affiliate ecosystem. www.awin.com
   • More network-oriented than a pure tracking infrastructure solution.

The architecture I'd recommend

For your use case, I'd lean toward Everflow or Impact.com, rather than giving every seller a completely separate affiliate account.

For example:

Affiliate
    ↓
Marketplace tracking link
    ↓
Marketplace
    ↓
Customer buys from Seller A + Seller B
    ↓
Your order system
    ├── Order #123 / Seller A / $80
    └── Order #123 / Seller B / $40
    ↓
Affiliate attribution platform
    ↓
Affiliate X credited with $120
    ├── Seller A commission = $8
    └── Seller B commission = $4

The important part is that the conversion event sent to the tracking platform includes the seller/vendor identifier. That lets you maintain one affiliate relationship while allocating commissions across multiple vendor accounts.

If you tell me what your marketplace is built on (custom, Shopify, WooCommerce, Sharetribe, Magento, etc.) and how sellers receive payouts (Stripe Connect, PayPal, your own ledger, etc.), I can recommend the best architecture and specific tool.

Yes. For a multi-seller marketplace, you want an affiliate/partner platform that can attribute a referral to an affiliate even when the resulting order contains products from different vendor accounts, then allocate the commission appropriately.

Best fits

1. Everflow — probably my first choice for a technically sophisticated marketplace. It supports affiliate/partner tracking, attribution, reporting, and integrations with payment/commerce systems, with an API-oriented architecture. www.everflow.io

Everflow

2. Refersion — strong for e-commerce affiliate tracking and centralized reporting across brands/merchants. It explicitly supports multiple brands in its marketplace product. www.refersion.com

Refersion

3. PartnerStack — good if your marketplace is more B2B/SaaS/partner-driven. It provides unique referral links and tracks referrals through to revenue/commissions. partnerstack.com

PartnerStack

4. Refgrow — particularly interesting because it explicitly markets itself for marketplaces, including tracking buyer/seller referrals and commissions on individual marketplace transactions. refgrow.com

Refgrow

The important architectural distinction

If your scenario is:

Affiliate → marketplace → customer buys Seller A + Seller B + Seller C → affiliate should receive credit for the appropriate sales

I'd prioritize Everflow or a marketplace-specific system over a normal single-store affiliate plugin.

You ideally want the tracking record to look something like:

affiliate_id: 123
click_id: abc456
customer_id: 789
order_id: ORD-1001

Order:
  Seller A → $80
  Seller B → $40
  Seller C → $25

Affiliate-attributed GMV: $145

Commission:
  Seller A → $8
  Seller B → $4
  Seller C → $2.50

The critical requirement is that affiliate attribution lives at the marketplace/order level, while commission liability can be split down to the individual seller/vendor account.

If you tell me what your marketplace is built on (e.g. Stripe Connect, Shopify, WooCommerce, custom, Sharetribe, Medusa, etc.) and how seller payments work, I can narrow this down to the 2–3 tools that can actually implement this architecture rather than just generic affiliate software.

For a multi-seller marketplace, I’d look at an affiliate platform designed to operate as a network, rather than a simple affiliate plugin for one store.

Best fits

1. TUNE — probably the strongest fit
   • Built specifically for both advertisers and affiliate networks.
   • Can manage multiple advertisers/vendors and affiliates from one platform.
   • Supports real-time tracking, reporting, postbacks, APIs, and custom attribution. www.tune.com
   • TUNE explicitly positions its network product for businesses acting as an intermediary between publishers and multiple brands. www.tune.com

2. impact.com — strong enterprise alternative
   • Tracks affiliate/referral conversions across many brands and provides aggregate reporting.
   • Particularly strong if your sellers are essentially independent brands/merchants and you want affiliates to discover and promote them through a marketplace. impact.com
   • It also supports cross-platform/customer-journey tracking. impact.com

The architecture I'd recommend

For your marketplace, the key is to have:

Affiliate → Marketplace tracking link → Marketplace → Seller/Vendor → Order

with the conversion record containing something like:

affiliate_id + click_id + order_id + vendor_id + commissionable_amount

That lets you answer:

"Affiliate X referred this customer, who bought $250 from Vendor A and $120 from Vendor B."

…and calculate the appropriate commission for each vendor while giving you marketplace-wide affiliate reporting.

I'd start with TUNE if your marketplace itself is going to operate the affiliate network and onboard many independent sellers. TUNE explicitly supports the network/intermediary model, whereas many conventional affiliate tools are primarily designed around one merchant ↔ affiliates. www.tune.comwww.tune.com

If you tell me what your marketplace is built on (custom, Shopify, WooCommerce, Sharetribe, etc.) and roughly how many sellers/affiliates you have, I can narrow this down to 2–3 platforms and explain exactly how I'd implement the cross-vendor attribution.

For a multi-vendor marketplace, you’ll want an affiliate tracking platform that can attribute a referral all the way through to a sale, even when the purchase involves different seller/vendor accounts. The right choice depends on whether you want a central marketplace affiliate program or each seller to run their own.

Common options:

For your use case, the architecture usually looks like:

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Affiliate click → tracking ID → marketplace checkout → vendor order record → commission calculation → payout

Key capabilities to look for:

• Global affiliate ID tracking across all vendors
• Order-level attribution (not just store-level)
• Vendor-specific commission rules (Seller A pays 10%, Seller B pays 5%)
• API/webhook support so your marketplace can send completed orders
• Multi-currency and payout support
• Fraud detection for fake referrals or self-purchases
• Sub-affiliate support if affiliates can recruit others

For a large marketplace, I would typically evaluate Impact.com or Everflow first because they are built closer to a network model. If your marketplace platform is custom-built, an API-first tracker like Everflow may be easier to integrate.

A few details would change the recommendation:

1. Are affiliates managed by you centrally, or can each seller create their own affiliate program?
2. Is your marketplace built on a platform (Shopify Marketplace, Sharetribe, WooCommerce, Magento, custom)?
3. Do you need affiliates paid by the marketplace, or do individual vendors pay their own commissions?

For a multi-vendor marketplace, the key requirement is that the affiliate platform can:

• Track referrals across all sellers from a single affiliate program.
• Attribute sales regardless of which vendor fulfills the order.
• Handle split commissions if one order contains products from multiple vendors.
• Integrate with your marketplace platform (Shopify, WooCommerce, Magento, custom, etc.).
• Provide a centralized dashboard for affiliates while allowing vendor-level reporting.

Here are the strongest options:

If you're an enterprise marketplace

impact.com is one of the strongest choices because it supports:

• Cross-merchant attribution
• API-first integrations
• Multi-party commission logic
• Marketplace and partner ecosystems
• Detailed reporting by vendor, affiliate, and customer

This is common for marketplaces with hundreds or thousands of sellers.

If you have a custom-built marketplace

Everflow and TUNE are particularly flexible because they let you:

• Fire conversions via API
• Pass vendor IDs as custom parameters
• Attribute commissions to different sellers
• Build custom commission rules
• Track cross-device and server-side conversions

For example:

Affiliate A refers customer

Customer buys:
- Vendor X: $120
- Vendor Y: $80

Conversion sent:
affiliate_id = 123
vendor_x = $120
vendor_y = $80

Platform calculates:
Affiliate earns 10%
Vendor reports stay separate

If you're on Shopify

If you're using Shopify with a marketplace app (such as Multi Vendor Marketplace or Marketplace Kit), you'll usually need an affiliate platform that supports server-side tracking and APIs. Most basic Shopify affiliate apps assume there's only one merchant and don't understand multiple vendors within a single order.

Recommendation by marketplace size

• Under 100 sellers: Post Affiliate Pro or Rewardful (if compatible with your payment flow)
• 100–1,000 sellers: Everflow or TUNE
• 1,000+ sellers or complex commission structures: impact.com

To narrow it down further, what marketplace platform are you using (e.g. Shopify, WooCommerce, Magento, Sharetribe, Mirakl, CS-Cart, or a custom-built platform), and roughly how many vendors do you have?

If you're running a multi-vendor marketplace where each seller has their own account, the key requirement is cross-vendor attribution: one affiliate referral should be credited correctly even if purchases span multiple vendors, with commissions calculated per vendor and/or for the marketplace.

The platforms below are the strongest options depending on your architecture:

If you own the marketplace

The cleanest architecture is:

1. Affiliate sends traffic to your marketplace.
2. Referral ID is stored.
3. Checkout records:
   • Affiliate ID
   • Order ID
   • Vendor ID
   • Product IDs
   • Revenue
4. Your affiliate platform receives a conversion for each vendor or line item.
5. Vendor dashboards see only their own attributed sales.

This works even when a single cart contains products from multiple sellers.

If vendors have separate stores

If each vendor operates an independent Shopify/WooCommerce/etc. store instead of sharing one checkout, you'll want an affiliate platform with:

• server-to-server postbacks
• API-based conversion tracking
• custom merchant/vendor identifiers
• multi-advertiser support

This is where Everflow and TUNE are generally much stronger than typical Shopify affiliate apps.

If you're using Shopify Marketplace

If you're using a Shopify-based marketplace (such as Garnet or Puppet Vendors), most marketplace apps handle:

• vendor accounts
• order splitting
• payouts

…but they generally do not provide sophisticated cross-vendor affiliate attribution out of the box, so teams often integrate a dedicated affiliate platform like Everflow or TUNE alongside the marketplace software. garnetmarketplace.com

Recommendation by marketplace size

• <100 vendors: Tapfiliate or FirstPromoter with custom integration can be sufficient.
• 100–1,000 vendors: Everflow is often the best balance of flexibility and implementation effort.
• Enterprise / thousands of vendors: TUNE or Impact.com are usually the strongest choices because they're designed for multi-advertiser environments.

Can you share what marketplace platform you're running (Shopify, Magento, WooCommerce, Mirakl, custom-built, etc.) and whether all vendors share one checkout or each vendor completes checkout in their own store? That changes which solution fits best.

For a multi-vendor marketplace, you’ll want an affiliate tracking platform that can attribute a referral all the way through to a purchase while supporting multiple sellers/vendor accounts, commissions, payouts, and reporting.

Some tools that fit this model:

For your use case, the architecture usually looks like:

genui{"data_networks_databases":{"type_id":"SQL_JOIN"}}

Affiliate click → tracking ID → marketplace order → seller/vendor ID → commission calculation → payout/reporting

Key capabilities to look for:

• Sub-account or multi-merchant support: each seller can have their own affiliate offers and commission rules.
• Order-level attribution: the affiliate should receive credit only for the specific vendor sale they influenced.
• API/webhook support: your marketplace backend should send conversion events with fields like:
  • affiliate ID
  • order ID
  • vendor ID
  • product/SKU
  • order value
  • refund/cancellation status
• Split commissions: one order may need commissions for:
  • affiliate
  • marketplace fee
  • seller/vendor
• Fraud controls: duplicate clicks, coupon leakage, self-referrals, suspicious traffic.
• Vendor dashboards: sellers can see their affiliate-driven revenue without seeing other sellers’ data.

For a marketplace with hundreds or thousands of sellers, I would generally shortlist:

1. Impact.com — if you want a mature enterprise partner ecosystem.
2. Everflow — if you want strong tracking infrastructure and flexible attribution.
3. TUNE — if you want to build and operate your own affiliate network layer.

If your marketplace is more like Amazon/Etsy (many independent sellers) versus Uber/Airbnb (platform-controlled supply), the best choice can differ because the commission and payout model changes.

If you run a multi-vendor marketplace, the key requirement is that the affiliate platform can attribute a referral to an order regardless of which seller fulfills it, while giving each vendor the appropriate reporting or payout visibility.

The best solution depends on how your marketplace is structured.

For a marketplace (Amazon/Etsy-style)

Ideally the tracking system should:

• Track one affiliate link regardless of which seller makes the sale.
• Receive order data from your marketplace backend (not individual seller stores).
• Attribute commissions by:
  • seller
  • product
  • category
  • commission rules
• Handle refunds and cancellations.
• Expose reporting for both marketplace administrators and individual vendors.
• Work through an API or server-to-server postbacks rather than relying only on browser cookies.

If vendors have their own stores

If every vendor operates an independent Shopify, WooCommerce, or other store, then you generally have two approaches:

1. Centralized tracking (recommended)

All orders are reported to one affiliate platform through your marketplace backend. Affiliates have one account and one tracking link.

2. Separate vendor programs

Each seller has their own affiliate program. This is much harder to manage because affiliates may need multiple accounts and referrals can be fragmented.

Recommendation

• Enterprise marketplace with hundreds or thousands of vendors: impact.com or Everflow.
• Growing marketplace with custom backend: Everflow is often a strong fit because of its API-first design.
• Simple Shopify marketplace: ReferralCandy or Shopify's ecosystem apps can work if all orders flow through a single storefront, but they become limiting once vendors operate independently.

If you can share:

• what marketplace platform you're using (custom, Shopify, Magento, Sharetribe, Mirakl, etc.),
• whether vendors have their own checkout or customers always check out through your marketplace,
• and roughly how many vendors you have,

I can narrow it down to the tools that best fit your architecture.