ChatGPT answers, unedited

If multi-vendor marketplace capability + total ownership of your code and data are the two primary requirements, I’d shortlist Vendure, Medusa, and Bagisto—but my first choice would be Vendure for a serious, long-lived marketplace.

My ranking

1. 🥇 Vendure — my recommendation

Vendure

Vendure is particularly strong because multi-vendor is designed into its architecture, rather than being merely an add-on. Its Channels can represent individual sellers, with seller-specific products, pricing, inventory, shipping, roles and orders. docs.vendure.io

It also specifically supports the hard marketplace problems: splitting orders between sellers, seller-specific fulfillment/shipping, platform fees and commissions. vendure.io

For ownership, self-hosting means your company controls the infrastructure and database. Vendure describes its core as open source and emphasizes portable code and data. vendure.io

Choose Vendure if you expect:

• Hundreds/thousands of vendors
• Complex vendor permissions
• Vendor-specific catalogs and pricing
• Multi-vendor checkout
• Order splitting
• Commissions/platform fees
• Multiple storefronts/channels
• B2B + B2C
• ERP/PIM/CRM integration
• Significant customization over several years

The main thing I'd have your legal team examine is the exact license for the Vendure version/components you intend to deploy, particularly if your definition of "total ownership" includes proprietary modifications and redistribution rights.

2. 🥈 Medusa — excellent if your engineering team wants maximum flexibility

Medusa

Medusa is a very good alternative, especially for a TypeScript/Node.js engineering organization.

The important caveat is that marketplace functionality isn't as native to the core as Vendure's. Medusa's own documentation describes marketplace functionality as something you build by extending its framework with vendor models, APIs and workflows. docs.medusajs.com

On the other hand, that gives you tremendous architectural freedom. Medusa's marketplace example supports vendor admins, vendor-specific products/orders and splitting customer orders by vendor. vendure.iovendure.iodocs.medusajs.com

Medusa is particularly attractive if you want to build a custom marketplace product, rather than configure an existing marketplace application.

3. 🥉 Bagisto — consider this if you prefer Laravel

Bagisto

Bagisto is worth serious consideration if your team is strong in PHP/Laravel. Its marketplace extension provides vendor registration, vendor dashboards, products and commissions, while the underlying platform is open source and self-hostable. bagisto.com

I'd favor it when time-to-market and conventional ecommerce functionality matter more than having a highly composable headless architecture.

What I'd choose

For a company starting a marketplace today:

Vendure → best overall architecture for a sophisticated multi-vendor marketplace

Medusa → best if your developers want a very flexible TypeScript framework and are comfortable building marketplace logic

Bagisto → best if you have a Laravel/PHP team and want a more traditional ecommerce platform

And I would not make Shopify, Mirakl, VTEX, etc. the first choice if "total data ownership" literally means we must control the production database, infrastructure, source code and ability to migrate without platform dependency. Self-hosted open source is much better aligned with that requirement.

One important distinction: "open source" does not automatically mean "total ownership." Before selecting, I'd evaluate the software license, dependencies, hosted/cloud terms, database portability, proprietary extensions, payment-provider data, vendor/customer data export, and whether you can continue running the exact version independently of the vendor.

If you tell me your expected number of vendors, B2B vs B2C, tech stack (PHP/Node/Python/etc.), expected GMV/order volume, and whether vendors need their own storefronts, I can narrow this to a specific architecture and recommend Vendure vs Medusa vs Bagisto for your company.

If multi-vendor marketplace + total data ownership are your two top requirements, I’d shortlist Medusa + MercurJS first, with Vendure as the stronger alternative for more enterprise-heavy requirements.

My recommendation

1. Medusa + MercurJS — best overall fit

Medusa Marketplace

MercurJS on GitHub

This is probably the closest match to what you described:

• Multi-vendor: vendor dashboards, vendor products/orders, commissions, order splitting, unified checkout and payouts are already addressed by the marketplace starter. medusajs.comgithub.com
• Data ownership: you can self-host the application and database rather than putting your commerce data into a proprietary SaaS platform.
• Open source: MercurJS is MIT licensed; Medusa's core is MIT licensed, although Medusa uses an open-core model and some Enterprise Edition components are commercially licensed. medusajs.comgithub.com
• Technology: TypeScript/Node.js, which is a good fit if your engineering team is already in the JavaScript/TypeScript ecosystem.
• Customization: particularly attractive if your marketplace has unusual vendor, commission, fulfillment, pricing or checkout rules.

One important caveat: Medusa itself doesn't natively ship as a complete marketplace; its marketplace functionality is implemented through its marketplace recipe/extensions. MercurJS gives you a much more complete starting point. docs.medusajs.com

2. Vendure — best if enterprise complexity matters more

Vendure

Vendure is extremely compelling if you need sophisticated B2B, multi-channel, permissions, organizations, pricing or operational workflows. Its Channels architecture can also represent individual vendors/sellers and provides channel-specific products, pricing, stock, administrators, orders, etc. docs.vendure.io

It is also explicitly designed to be self-hosted: its documentation says you own the deployment, data and stack. github.com

The catch is licensing: current Vendure Core is GPLv3, with a commercial license also available. github.com If your company's legal team wants permissive licensing and maximum freedom to build proprietary extensions, Medusa/Mercur is generally more comfortable.

Quick decision matrix

What I would choose

For a company saying "we want an Amazon/Etsy-style marketplace, but we want to own the data and infrastructure", I'd choose:

Medusa + MercurJS + PostgreSQL + self-hosted infrastructure

rather than trying to build the marketplace functionality from raw Medusa.

That gives you a fairly clean architecture where your company owns the code, database, infrastructure and marketplace data, while avoiding having to implement vendor management, order splitting, commissions and vendor dashboards from scratch.

If you tell me your stack (Node/Python/PHP/etc.), number of vendors, B2B vs B2C, expected order volume, and whether vendors need their own payouts, I can narrow this down to Medusa/Mercur vs Vendure vs Saleor vs Bagisto and recommend an architecture.

For a multi-vendor marketplace with full data ownership, I would shortlist open-source, self-hostable commerce platforms rather than SaaS marketplace products. The “best” choice depends heavily on whether you need a true Amazon-style marketplace (vendors, commissions, vendor dashboards, payouts) or a multi-store commerce platform. ShipGarden OSSAlt

Best overall fits

ShipGarden Vendure## My recommendation by scenario

1. You want a serious marketplace platform (vendors, commissions, approvals, complex rules)

Pick: Vendure

Why:

• TypeScript/NestJS stack works well for custom marketplace development.
• Plugin architecture is designed for extending commerce logic.
• Good fit when you need: - vendor accounts
• seller-specific catalogs
• custom order routing
• marketplace fees
• multiple storefronts/channels

The tradeoff is that you will likely build marketplace-specific modules rather than install a complete “multi-vendor marketplace” package. Build with Matija Grafen

2. You are an enterprise with strong backend engineering and B2B needs

Pick: Saleor

Why:

• Mature API-first architecture.
• Strong for: - multiple channels
• international commerce
• complex catalogs
• enterprise integrations
• Self-hosting gives you control of customer, order, and product data. Saleor Commerce

3. You want the fastest custom build with JavaScript/TypeScript developers

Pick: Medusa

Why:

• Very flexible modular architecture.
• Easier for Node.js teams.
• Good when your marketplace model is unique and you do not want your business logic constrained by a prebuilt marketplace engine. ShipGarden

Solutions I would be cautious about

• WooCommerce + marketplace plugins

Good for small marketplaces, but large multi-vendor systems can become plugin-heavy and harder to maintain.

• Magento/Open Source (Adobe Commerce Open Source)

Powerful, but operational complexity and development cost can be high for a modern headless marketplace.

• SaaS marketplace platforms

Easier launch, but usually conflict with your requirement of total data ownership.

Architecture I would choose for a company that says “total data ownership”

A strong reference architecture:

• Commerce engine: Vendure / Saleor / Medusa
• Database: PostgreSQL owned by your company
• Object storage: S3-compatible storage you control
• Search: OpenSearch/Elasticsearch
• Payments: Stripe Connect or equivalent marketplace payment provider
• Identity: Keycloak or your own IAM
• Analytics: self-hosted warehouse (ClickHouse, PostgreSQL, etc.)
• Frontend: Next.js/React storefront

My ranking for your stated requirements

1. Vendure — best balance for a custom enterprise marketplace
2. Saleor — best if you need enterprise commerce maturity
3. Medusa — best if your engineering team wants maximum flexibility

If you tell me:

• number of vendors expected (100 / 10,000 / 1M),
• B2B vs B2C,
• need for vendor payouts/commissions,
• your preferred tech stack (Node, Python, PHP),
• cloud vs on-prem,

I can narrow it to a single recommendation.

If multi-vendor marketplace + total data ownership are your two primary requirements, I’d shortlist Vendure and Medusa, with Vendure as my first choice for a serious, long-term marketplace.

🥇 My recommendation: Vendure

Vendure is particularly well aligned with your requirements because multi-vendor isn't merely an add-on: Vendure has APIs and data-model concepts specifically designed for marketplaces. Its marketplace architecture handles things such as sellers, order splitting, shipping, payments and platform fees. docs.vendure.io

Its Channels model is also useful if each vendor needs isolation of products, pricing, stock, shipping methods, administrators, orders, etc. docs.vendure.io

Most importantly for "total data ownership," you can self-host the open-source core on your own infrastructure and database. Vendure explicitly positions its platform around portability and ownership of your code and data. vendure.io

Vendure official site

🥈 Medusa — excellent alternative

Medusa is a very strong choice if you have a capable development team and expect to build a highly customized marketplace.

Medusa's marketplace functionality is implemented through its framework rather than being entirely native: its official recipe demonstrates vendors, vendor admins, vendor-specific products/orders and splitting customer orders by vendor. docs.medusajs.com

The core is open source and MIT-licensed, although Medusa uses an open-core model with some Enterprise Edition components under a commercial agreement. github.com

Medusa official site

🥉 Bagisto — consider if you're a Laravel shop

Bagisto is worth considering if your organization already has strong PHP/Laravel expertise. Its marketplace functionality supports sellers, commissions, product approvals, vendor dashboards, orders and transactions. github.com

Bagisto official site

What I'd choose

For a company building something like Amazon/Etsy/eBay-style marketplace infrastructure, I'd rank them:

1. Vendure → best overall fit
2. Medusa → best if your developers want maximum architectural freedom
3. Bagisto → best if your existing stack is Laravel/PHP

One important distinction: "open source" doesn't automatically mean every feature is free/open-source. Before committing, I'd specifically audit the license of the exact version/modules you plan to deploy, vendor payout/payment functionality, search, admin functionality, and any enterprise-only components.

If you tell me your expected number of vendors, product count, B2B vs B2C, preferred tech stack, and whether you need vendor payouts/commissions, I can narrow this down to a specific architecture and deployment recommendation.

If multi-vendor marketplace + total data ownership are your two non-negotiables, I’d shortlist Medusa, Vendure, and Bagisto rather than a SaaS marketplace platform.

My recommendation: Medusa + marketplace layer

Best overall fit: Medusa if you have a modern TypeScript/Node.js engineering team.

Medusa is MIT-licensed, self-hostable, and designed as a modular commerce engine. That gives you control over the application, database, infrastructure, and customer/vendor data rather than putting the marketplace's core data in a vendor's SaaS database. contracollective.com

The important caveat: Medusa isn't a turnkey multi-vendor marketplace out of the box. You'd build or adopt the marketplace layer for:

• Vendor onboarding/KYC
• Vendor organizations and permissions
• Vendor-specific catalogs
• Vendor commissions
• Seller dashboards
• Split orders
• Vendor payouts
• Vendor shipping/fulfillment
• Seller analytics
• Disputes/refunds
• Marketplace admin

If you want these capabilities more natively, there are stronger alternatives.

How I'd rank them

\*Bagisto's multi-vendor functionality comes through its Marketplace extension rather than the core platform. bagisto.com

Vendure deserves a serious look

For your particular requirements, Vendure may actually be the strongest architectural choice.

Vendure has documented APIs specifically for building multi-vendor marketplaces, including the concept of customers ordering products from multiple sellers. It even provides an example marketplace plugin to demonstrate the architecture. docs.vendure.io

It's also TypeScript/GraphQL/NestJS, so it's a good fit if you want a highly customized marketplace rather than a conventional PHP ecommerce installation.

The trade-off is licensing: Vendure's core is GPLv3/open-core, with some advanced enterprise functionality commercial. So I'd have your legal team review the license implications before committing. vendure.io

If "total data ownership" means literally everything

I'd structure the system like this:

Your infrastructure

→ PostgreSQL
→ Object storage (S3-compatible)
→ Redis
→ Medusa/Vendure
→ Marketplace service
→ Search engine
→ Analytics warehouse
→ Vendor portal
→ Customer storefront
→ Payment provider

You own the database, backups, object storage, logs, analytics data, product catalog, customer records, vendor records and order history.

The payment processor would necessarily retain payment-related information required for processing/compliance, but you can architect the commerce system so you're not dependent on a marketplace SaaS provider for your operational data.

My decision rule

• Want maximum developer flexibility + MIT + TypeScript: Medusa
• Want marketplace/B2B architecture + TypeScript: Vendure
• Want a more traditional, ready-made multi-vendor ecommerce system + Laravel: Bagisto
• Want enterprise headless commerce and complex catalogs, but marketplace is secondary: Saleor

For a company building a serious marketplace that expects dozens/hundreds/thousands of independent sellers, I'd personally start with Vendure vs. Medusa, and only choose Bagisto if your team is already strongly invested in Laravel/PHP.

If you tell me your expected vendor count, monthly orders/GMV, B2B vs B2C, payment/payout model, and preferred tech stack, I can narrow this down to a specific architecture and recommend which one I'd actually build on.

For a company that needs multi-vendor marketplace capabilities + full data ownership, I would generally shortlist Vendure, Medusa, Saleor, and Odoo, but the best fit depends heavily on whether you want a developer-built marketplace or a ready-to-operate business platform.

My top recommendation: Vendure

Best fit: serious B2B/B2C marketplace with engineering resources

Why it fits:

• Self-hostable → you control the database, infrastructure, and customer/vendor data.
• Built for complex commerce models.
• Strong plugin architecture for:
  • vendor accounts
  • seller catalogs
  • commissions
  • order splitting
  • custom workflows
  • multi-channel commerce
• TypeScript/NestJS/GraphQL stack is attractive for modern engineering teams.
• Has documented multi-vendor marketplace patterns. docs.vendure.io

Trade-offs:

• You will need developers to build some marketplace-specific workflows.
• Vendor payouts, seller onboarding, dispute handling, etc., usually require customization or integrations.

Vendure is especially strong if your marketplace is closer to:

• Amazon-style product marketplace
• B2B distributor marketplace
• wholesale platform
• multi-brand commerce ecosystem

vendure.io

Comparison

Second choice: Medusa

Choose Medusa if you want:

• maximum developer freedom
• modern JavaScript stack
• a composable architecture
• custom marketplace logic

Medusa provides marketplace examples where vendors manage products/orders and orders can be split by vendor, but marketplace functionality is typically something you build on top rather than a complete built-in marketplace suite. docs.medusajs.com

Good for:

• startup marketplaces
• unique business models
• custom mobile/web experiences

If you want less custom development

Odoo

Best when your marketplace is tied to:

• inventory
• accounting
• CRM
• fulfillment
• supplier management

Weakness:

• Marketplace UX is not its strongest area.
• You may spend time customizing modules.

Avoid SaaS marketplaces if "total data ownership" is a hard requirement

Platforms like hosted marketplace SaaS products can accelerate launch, but you typically accept:

• vendor-controlled infrastructure
• limited database access
• API limitations
• migration risk

For ownership, self-hosted open source is usually the better direction.

My practical recommendation

For a company building a long-term marketplace:

Enterprise/B2B marketplace → Vendure
Startup with unique marketplace idea → Medusa
Marketplace + ERP operations → Odoo
Need something live quickly with less engineering → CS-Cart Multi-Vendor or WooCommerce-based solutions

If you tell me:

1. B2B, B2C, or both?
2. Physical products, digital products, services, or rentals?
3. Expected vendors (100, 10k, 1M)?
4. Do vendors need their own dashboards and payouts?

…I can narrow this to a specific architecture.

For a company that needs multi-vendor marketplace capabilities + total data ownership, I would focus on self-hosted open-source platforms rather than SaaS marketplace tools. The best fit depends on how much marketplace functionality you need out of the box versus how much custom engineering you have available. www.sharetribe.com

Short recommendation

github.comsaleor.io

My default recommendation: Saleor

For a serious company that says "we need total data ownership", I would shortlist Saleor first.

Strengths:

• ✅ Self-host your entire stack
• ✅ Own your database and customer/vendor data
• ✅ API-first (GraphQL)
• ✅ Strong permissions model for vendor roles
• ✅ Multi-warehouse inventory support
• ✅ Suitable for custom vendor portals
• ✅ Good fit for enterprise integrations (ERP, CRM, analytics)

saleor.iosaleor.io

The tradeoff:

• You will likely build some marketplace-specific pieces yourself:
  • vendor onboarding
  • commission rules
  • seller dashboards
  • vendor payouts
  • dispute workflows

Saleor provides the foundation, but it is not a finished Amazon clone. saleor.iosaleor.io

When Medusa is the better choice

Choose Medusa if your company has a strong engineering team and wants to create a differentiated marketplace experience.

Good fit if you need:

• custom checkout logic
• unusual business rules
• custom fulfillment
• AI shopping experiences
• highly customized buyer/seller workflows

Its TypeScript/Node.js ecosystem makes it attractive for modern web teams. www.sharetribe.com

The tradeoff:

• More marketplace functionality must be engineered rather than configured.

When I would avoid WooCommerce

WooCommerce is excellent for single-merchant commerce, but a large multi-vendor marketplace can become complicated because you often end up managing:

• marketplace plugins
• payment split extensions
• vendor dashboards
• performance scaling issues
• plugin compatibility

It can work, but for a strategic marketplace where your data and platform are core assets, I would usually choose a headless commerce architecture instead.

Architecture I would recommend

For a company building a long-term marketplace:

Frontend
 ├── Next.js / React storefront
 ├── Vendor portal
 └── Admin portal

Commerce Core
 ├── Saleor or Medusa
 ├── PostgreSQL database
 ├── Object storage (S3-compatible)
 └── Search engine (OpenSearch/Elasticsearch)

Marketplace Services
 ├── Vendor management
 ├── Commission engine
 ├── Payout service
 ├── Reviews/ratings
 ├── Messaging
 └── Analytics

Infrastructure
 ├── Your cloud account
 ├── Your backups
 ├── Your encryption keys
 └── Your data warehouse

Decision rule

• $10M+ GMV, enterprise customers, complex inventory: Saleor
• Startup building a unique marketplace product: Medusa
• Need something closer to Amazon/Etsy out of the box: Vasty Shop or a marketplace-specific fork
• Need maximum ownership and minimum vendor lock-in: Saleor self-hosted

Before selecting, I would clarify three things:

1. Is this a physical goods marketplace, services marketplace, or digital products?
2. How many vendors do you expect (100, 10,000, 1M+)?
3. Do vendors need their own dashboards, inventory, shipping, and payouts?

Those answers can change the best choice significantly.

If your two non-negotiables are multi-vendor marketplace functionality + complete control of the data/infrastructure, I’d shortlist Bagisto, Vendure, and Medusa—but they fit different situations.

My recommendation

1. Bagisto — best if you want the most turnkey open-source marketplace

Bagisto is probably the strongest fit if you want a conventional marketplace with vendor management rather than building marketplace behavior yourself. Its marketplace functionality supports seller management, commissions, product approvals, vendor dashboards, orders, and transactions. It is Laravel/PHP based and available under the MIT license. github.com

Why I'd choose it:

• Multi-vendor functionality is already a major part of the ecosystem.
• MIT licensing is attractive if you want maximum freedom to modify and redistribute your implementation.
• Self-hosting means your database and customer/vendor data can remain entirely under your control.
• Good choice if your team is comfortable with PHP/Laravel.

Bagisto official site

2. Vendure — best for a sophisticated, engineering-led marketplace

I'd choose Vendure over Bagisto if you're building a technically sophisticated marketplace—especially B2B, complex pricing, multiple channels, or highly customized workflows.

Vendure is a headless TypeScript/NestJS/GraphQL platform with a plugin architecture. Its documentation explicitly provides APIs and an example implementation for multi-vendor marketplaces. docs.vendure.io

It can be completely self-hosted on your infrastructure, including cloud, Kubernetes, on-prem, and air-gapped environments. vendure.io

Important caveat: Vendure Core is GPLv3, while some enterprise capabilities are commercially licensed. github.com So if "open source" also means permissive licensing with no copyleft, Bagisto has an advantage.

Vendure official site

3. Medusa — best if you want a composable developer platform

Medusa is another strong TypeScript option. Its commerce modules are open source and it explicitly supports building marketplaces and distributor platforms. github.com

I'd put it behind Vendure for your particular requirement because multi-vendor marketplace functionality generally requires more application-level construction rather than being the most turnkey marketplace experience.

Medusa official site

Quick decision matrix

Bottom line

If you mean:

"We want an Amazon/Etsy-style marketplace, multiple vendors, vendor dashboards/commissions/orders, and we want the entire system and database running on our infrastructure."

I'd start with Bagisto.

If instead you mean:

"We're an engineering-heavy company and need a highly customized marketplace architecture that will become a core business platform."

I'd choose Vendure.

One important distinction: "data ownership" and "open source" aren't quite the same thing. A self-hosted system gives you control over where the data lives, but you should also examine telemetry, third-party integrations, backups, payment-provider data, object storage, analytics, and the software license before declaring total data ownership.

If you tell me your expected vendor count, monthly orders/GMV, B2B vs B2C, tech stack (PHP vs Node/TypeScript), and whether you need vendor payouts/Stripe Connect, I can narrow this to a specific architecture and recommend which one I'd actually deploy.

If your priorities are:

1. True multi-vendor marketplace capabilities (vendor onboarding, seller dashboards, commissions, split orders/payments, vendor catalogs)
2. Total data ownership (your servers, your database, your code, no SaaS lock-in)
3. Long-term extensibility

I would focus on open-source, self-hosted marketplace-native platforms, not plugins added to a single-store ecommerce system.

Here are the strongest candidates:

My recommendation by scenario

Choose Mercur if:

• You are building a marketplace similar to Amazon, Alibaba, Faire, or a vertical B2B marketplace.
• You want a modern stack (Node/TypeScript), API-first architecture, and control over your roadmap.
• You have developers or an implementation partner. github.com

Choose Bagisto if:

• Your company already has Laravel/PHP expertise.
• You need deep customization but want faster development than building from scratch. bagisto.com

Choose Spree if:

• You expect enterprise-scale requirements:
  • multiple storefronts
  • complex pricing
  • international commerce
  • ERP integrations
  • headless architecture github.comgithub.com

Solutions I would be cautious about for your requirement

• WooCommerce + Dokan/WCFM-style marketplace plugins: excellent for MVPs, but marketplace logic is layered onto a single-store architecture.
• Hosted marketplace SaaS platforms: faster launch, but you generally give up infrastructure ownership and database control.
• Magento/Adobe Commerce with marketplace extensions: powerful, but marketplace functionality becomes dependent on extension vendors and increases upgrade complexity.

A practical enterprise architecture

For a company that says “total data ownership,” I would typically design:

• Commerce engine: Mercur, Spree, or Bagisto
• Database: PostgreSQL/MySQL under your control
• Object storage: your S3-compatible storage (or private cloud)
• Search: OpenSearch/Elasticsearch
• Payments: Stripe Connect, Adyen, or your preferred processor
• Identity: Keycloak or your existing IAM
• Analytics: your own warehouse (Snowflake, BigQuery, ClickHouse, etc.)
• Deployment: Kubernetes/Docker on your cloud or private infrastructure

If you want the shortest answer: Mercur is probably the closest match for “open-source multi-vendor marketplace + full data ownership” today; Spree is the stronger choice if you are building a very large enterprise commerce platform. github.comgithub.com

The deciding questions are:

1. Is your marketplace B2B, B2C, or both?
2. Expected scale: 10k, 100k, or millions of SKUs/vendors?
3. Do you have an internal engineering team?
4. Do you need vendor payouts/split payments built in, or can that be custom?

If multi-vendor marketplace capability + total data ownership are your top priorities, you should generally avoid SaaS-first platforms and choose a self-hosted open-source marketplace stack where you control the code, database, hosting, and customer/vendor data. bagisto.comdocs.bagisto.com

The best fit depends on your company’s technical environment:

bagisto.com

My shortlist for a company that says “we own our data”

1. Best overall for a ready-made multi-vendor marketplace: Bagisto

• Strong choice if you want:
  • vendor registration
  • seller dashboards
  • product approval workflows
  • commissions
  • marketplace administration
  • Laravel customization
• Easier to turn into a functioning marketplace than a pure commerce framework. docs.bagisto.com

2. Best for a technology company building a differentiated marketplace: Medusa

• Choose this if you want a custom platform:
  • unique vendor rules
  • custom checkout
  • unusual fulfillment models
  • mobile apps + headless storefronts
  • API-first architecture
• More like building your own marketplace engine than installing one. www.sharetribe.com

3. Best for enterprise complexity: Saleor

• Good when you need:
  • complex catalogs
  • multiple regions/currencies
  • advanced inventory models
  • GraphQL-first architecture
• Usually requires a stronger engineering team. contracollective.com

I would avoid as your primary choice if “total ownership” is non-negotiable

• SaaS marketplaces (you rent the platform and depend on vendor roadmap)
• Closed marketplace builders
• Platforms where vendor/customer data lives only in the provider’s cloud

Recommended architecture for long-term ownership

A strong enterprise setup would look like:

• Commerce engine: Bagisto, Medusa, or Saleor
• Database: PostgreSQL/MySQL under your control
• Hosting: your AWS/Azure/on-prem environment
• Search: OpenSearch/Elasticsearch
• Files: your own object storage (S3-compatible)
• Payments: your own merchant accounts
• Analytics: your own warehouse (Snowflake, BigQuery, ClickHouse, etc.)

If you tell me:

1. expected number of vendors (100? 10,000?),
2. product marketplace vs service marketplace,
3. B2B, B2C, or both,
4. your development stack (PHP, Node, Python, Java),
5. expected order volume,

I can narrow this to a specific recommendation.

If multi-vendor marketplace capability + complete control of your code and data are the priorities, I’d shortlist Medusa, Bagisto, and Vendure. My default recommendation for a new marketplace would be Medusa.

1. 🥇 Medusa — best overall for a custom marketplace

Medusa is particularly attractive if you have a development team and want the marketplace to become a strategic product rather than just an ecommerce site.

Its architecture is modular and MIT-licensed, and the official documentation explicitly describes building marketplaces with custom vendor/seller data models, vendor-specific orders, APIs, and workflows. docs.medusajs.com

It also now has a marketplace offering/starter with features such as vendor dashboards, unified multi-vendor checkout, and split payments/payouts. medusajs.com

Why I'd choose it:

• Your database can live entirely on your infrastructure.
• MIT license is very permissive.
• TypeScript/Node.js makes it attractive for modern engineering teams.
• Excellent foundation for custom vendor logic, commissions, payouts, fulfillment, etc.
• Headless architecture makes it easier to build your own web/mobile experiences.

Caveat: You should expect engineering work. "Open source" doesn't mean the complete Amazon/Etsy-style marketplace business logic is all turnkey.

2. 🥈 Bagisto — best if you want more ecommerce functionality out of the box

Bagisto is built on Laravel and is MIT licensed. Its ecosystem includes marketplace functionality, vendor management, commissions, product management, and integrations. bagisto.com

I'd lean toward Bagisto if your team is strong in PHP/Laravel or you want a more conventional ecommerce platform rather than assembling a highly customized commerce backend.

3. 🥉 Vendure — excellent for enterprise/B2B

Vendure has a very strong architecture for complex commerce, and its documentation specifically provides APIs and an example implementation for multi-vendor marketplaces. docs.vendure.io

It's especially compelling if you need B2B organizations, sophisticated pricing, multiple channels, ERP integration, permissions, SSO, and auditability.

The important catch is licensing: Vendure Core is GPLv3, while its commercial Platform provides additional enterprise capabilities under a commercial license. github.com

What I'd pick for your company

If you're building a serious marketplace from scratch:

Medusa + PostgreSQL + your own cloud infrastructure

That gives you a strong combination of source-code control, database ownership, extensibility, and a modern marketplace architecture.

I'd choose Bagisto instead if your organization is already heavily invested in Laravel/PHP.

I'd choose Vendure instead if this is primarily an enterprise/B2B marketplace where organizational accounts, complex pricing, approvals, permissions, and ERP integration matter more than minimizing licensing constraints.

One important distinction: "data ownership" isn't really determined by open source alone. You should architect the deployment so your company controls the PostgreSQL database, object storage, backups, encryption keys, logs, and infrastructure—and verify that any marketplace/payment extensions don't introduce external data dependencies.

If you tell me your expected vendors/GMV, B2B vs B2C, tech stack, payment/payout model, and whether vendors need their own storefronts, I can narrow this to a specific architecture and compare Medusa vs Bagisto vs Vendure feature-by-feature.

If multi-vendor marketplace + total data ownership are your two primary requirements, I’d shortlist Bagisto, Mercur, and Vendure—with Bagisto as the best default choice for most companies.

🥇 My pick: Bagisto

Bagisto is probably the best starting point if you want a functioning multi-vendor marketplace rather than a commerce framework that you have to turn into one.

Its marketplace functionality supports vendor management, commissions, product approval, vendor dashboards, catalog/order management, and multi-vendor workflows. The underlying platform is MIT-licensed and self-hostable, so you can keep the application and database entirely on infrastructure you control. github.com

That combination is particularly attractive if your definition of "total data ownership" means:

• Your own database
• Your own cloud/on-prem infrastructure
• No mandatory SaaS dependency
• Full source-code access
• Ability to export/migrate everything
• Control over customer, vendor, order and transaction data
• Ability to modify the platform without waiting for a vendor

🥈 Consider Mercur if the marketplace itself is the product

MercurJS is interesting if you're building something more like Amazon/Etsy/Airbnb-style marketplace infrastructure rather than simply adding vendors to an ecommerce store.

It's specifically an open-source multi-vendor B2B/B2C marketplace built on Medusa, with vendor and admin panels, PostgreSQL, Redis, and an MIT license. github.com

I'd favor it over Bagisto if your engineering team is strongly Node/TypeScript/React oriented.

🥉 Vendure for a sophisticated enterprise architecture

Vendure is arguably the strongest architectural choice if you have a serious engineering organization and expect complicated B2B, pricing, channels, ERP integration, or custom marketplace rules.

Vendure explicitly supports multi-vendor implementations and its Channels model can represent individual vendors, with vendor-specific products, pricing, stock, administrators, orders, etc. docs.vendure.io

The catch is licensing: Vendure Core is GPLv3, while some enterprise capabilities are under its commercial license. github.com So I'd have your legal team review the GPL implications before committing.

What I'd choose

If I were making the architecture decision:

Bagisto + PostgreSQL/MySQL + your own cloud infrastructure for the lowest-risk path to a fully owned marketplace.

Choose Mercur instead if your team is Node/TypeScript-first and you want a marketplace-oriented architecture from the outset.

Choose Vendure if you're an enterprise engineering organization where extensibility, complex B2B workflows and long-term architecture matter more than having the most marketplace functionality out of the box.

One important distinction: "open source" doesn't automatically mean "total data ownership." Self-host the application and database, control backups/object storage/search/analytics, and ensure payment providers aren't your system of record for business data.

If you tell me your tech stack (PHP/Laravel vs Node/TypeScript), expected GMV/order volume, B2B vs B2C, and whether vendors need their own storefronts/payouts, I can narrow this to one architecture and compare the actual marketplace features, licensing, scalability, and implementation cost.

For a company that needs multi-vendor marketplace capabilities + total data ownership, I would focus on self-hosted open-source platforms rather than SaaS marketplace builders. The best fit depends mainly on whether you want a ready marketplace product or a composable commerce foundation. bagisto.com

Shortlist

My recommendation by scenario

1. You want an Amazon/Etsy-style marketplace quickly
→ Bagisto is probably the closest match. It starts closer to a marketplace product: vendors, commissions, seller management, catalog ownership, and marketplace workflows. bagisto.com

2. You have a strong engineering team and want a long-term platform
→ Medusa is a strong choice. It gives you a modular commerce backend where you can build your own vendor, payout, fulfillment, and marketplace rules while owning the infrastructure. propicked.comborn.mt

3. You are building enterprise commerce (multiple regions, channels, complex catalogs)
→ Saleor is worth evaluating. It is designed around API-first/headless commerce and emphasizes avoiding vendor lock-in through open-source ownership. saleor.io

For “total data ownership,” verify these points regardless of platform

• Self-host the application and database
• Own customer, vendor, order, payment, and analytics data
• Avoid proprietary hosted marketplace databases
• Ensure export APIs exist
• Control backups and encryption keys
• Confirm the open-source license allows your intended commercial use

A practical architecture for a serious marketplace is often:

Commerce engine (Bagisto / Medusa / Saleor)
→ Marketplace module (vendors, commissions, payouts)
→ Your database + cloud account
→ Custom frontend/mobile apps
→ Your analytics and AI layer

If you tell me:

1. number of vendors expected (100, 10k, 1M+),
2. B2B vs B2C,
3. preferred tech stack (PHP/Laravel, Node/TypeScript, Python), and
4. whether you need vendor payouts built in,

I can narrow this to a specific recommendation.

If multi-vendor marketplace + total control of your data/code are the two primary requirements, I’d shortlist Vendure, Medusa, and Bagisto—but my default recommendation for a serious enterprise build would be Vendure.

1. 🥇 Vendure — my first choice

Vendure is particularly well suited if your marketplace will become a substantial business platform.

Its Channels architecture maps naturally to vendors: each vendor can have its own products, pricing, stock, administrators, orders, etc. Vendure explicitly documents multi-vendor marketplace implementations. docs.vendure.io

It is also self-hostable, so your database and application can live on infrastructure you control. The core is open source, and the architecture is TypeScript/Node.js/GraphQL. vendure.io

Why I'd choose it: strong domain model + excellent extensibility + marketplace concepts already fit the architecture.

One caveat: Vendure has an open-source Core plus commercial Platform capabilities, so you should carefully distinguish what you need from the commercial layer if "100% open source" is a hard requirement. vendure.io

2. 🥈 Medusa — best if you want maximum architectural freedom

Medusa is an excellent choice if you have a strong engineering team and expect to build a lot of proprietary marketplace logic.

Its commerce modules are open source, and you can self-host the application/database. github.com

The important distinction is that multi-vendor isn't native to the core Medusa application. Medusa provides an official marketplace recipe showing how to create vendors, vendor admins, vendor-specific products/orders, and split customer orders between vendors. docs.medusajs.com

There's also a marketplace solution in the Medusa ecosystem that adds vendor dashboards, commissions, vendor verification, order splitting, and other marketplace functionality. medusajs.com

Choose Medusa over Vendure if: your marketplace is highly differentiated and you want the underlying commerce framework to be a set of building blocks rather than an opinionated marketplace architecture.

3. 🥉 Bagisto — best for a conventional marketplace and Laravel team

Bagisto is worth serious consideration if your company prefers PHP/Laravel.

Its Multi Vendor Marketplace functionality already covers seller management, commissions, product approval, order handling, and vendor dashboards. docs.bagisto.com

It's arguably the quickest route to a conventional multi-seller ecommerce marketplace, particularly if your team already knows Laravel.

Choose Bagisto if: speed-to-market and ready-made marketplace functionality matter more than having the most sophisticated headless architecture.

What I'd recommend for your company

If by "total data ownership" you mean:

• database runs on your infrastructure
• no mandatory SaaS dependency
• source code available
• ability to modify the platform
• ability to export/migrate everything
• vendor/customer/order data belongs to your company
• no platform controlling your marketplace roadmap

then I'd rank them:

1. Vendure → best overall enterprise architecture
2. Medusa → best for maximum custom development freedom
3. Bagisto → best for faster implementation with Laravel

One important distinction: open source ≠ automatically total data ownership. You should also examine the software license, hosted services, payment provider, search provider, analytics, email/SMS providers, and any proprietary marketplace extensions. Your architecture should ensure that none of those becomes the system of record.

If I were designing it

I'd probably use:

Vendure/Medusa → PostgreSQL → your cloud/VPC → object storage you control → your identity provider → your payment processor → your own analytics/data warehouse

with the marketplace entities modeled roughly as:

Marketplace → Vendors → Vendor Users → Products → Inventory → Orders → Vendor Orders → Commissions → Payouts

That gives you a platform where the marketplace database remains your company's source of truth, rather than having vendor data trapped in a SaaS marketplace provider.

If you tell me your expected vendor count, monthly orders/GMV, B2B vs B2C, preferred tech stack (Node/PHP/etc.), and whether you need vendor payouts/commissions, I can narrow this to a specific architecture and licensing choice.

If multi-vendor marketplace + total ownership of your data are the two top requirements, I’d shortlist Vendure, Bagisto, and Medusa, with Vendure as my first choice for an enterprise-grade implementation.

🥇 My recommendation: Vendure

Vendure is particularly compelling because its Channels model maps naturally to marketplace vendors. A channel can have its own products, pricing, stock locations, shipping methods, administrators, orders, etc., while still operating within one commerce backend. Vendure explicitly documents this architecture for multi-vendor marketplaces. docs.vendure.io

For data ownership, you can self-host Vendure, choose your own infrastructure/region, and keep your code and data under your control. The open-source Core is GPLv3; Vendure also has a commercial Platform layer if you later want enterprise functionality/support. vendure.io

Vendure official site

🥈 Bagisto if you want something more turnkey

Bagisto is worth serious consideration if your team is comfortable with Laravel/PHP. Its marketplace functionality already covers seller management, seller dashboards, commissions, product approval, orders and transactions rather than requiring you to build all of those concepts yourself. github.com

Bagisto official site

🥉 Medusa if your marketplace is highly custom

Medusa is more of a commerce framework than a ready-made marketplace. Its official marketplace recipe demonstrates vendor accounts, vendor-admin access, vendor-specific products/orders, and splitting a customer's order across vendors. docs.medusajs.com

That makes it attractive when your marketplace has unusual business rules that don't fit a conventional marketplace model.

Medusa official site

What I'd choose

For an enterprise marketplace: Vendure

For a Laravel-based team wanting more marketplace functionality out of the box: Bagisto

For a highly differentiated marketplace where engineering flexibility matters more than out-of-the-box functionality: Medusa

One important distinction: "open source" doesn't automatically mean "total data ownership." I'd specifically require that the platform can be self-hosted, that the database is accessible/exportable, that vendor/customer/order data isn't dependent on a proprietary SaaS service, and that your custom code remains portable.

If you tell me your expected number of vendors/SKUs, B2B vs B2C, payment/payout model, and tech stack (PHP/Node/etc.), I can narrow this down to a specific architecture and explain Vendure vs Bagisto vs Medusa for your use case.