ChatGPT answers, unedited

If you mean “one login where an agency can manage landing pages, funnels, leads, automations, and campaigns for many different clients,” the platform you’re probably thinking of is HighLevel (GoHighLevel).

It’s specifically built around client sub-accounts: each client gets a separate workspace, while the agency can switch between clients from one dashboard. It includes landing-page/funnel building, CRM, email/SMS campaigns, workflows, appointments, reporting, and more. GoHighLevel

The main options

HighLevel is the closest match if you're looking for an agency operating system, rather than simply a landing-page builder. Its official description specifically positions it around running multiple client workflows, campaigns and pipelines from one place. GoHighLevel

If the main thing you care about is building hundreds of client landing pages and running paid-ad campaigns/A-B tests, Unbounce is another particularly relevant option; it supports multiple clients, cross-account duplication, permissions, and campaign reporting. unbounce.com unbounce.com

If you tell me what kind of agency you run (PPC, lead gen, web design, SaaS, etc.) and roughly how many clients, I can narrow it down to the 2–3 platforms that fit that workflow.

Yes — agencies commonly use multi-client marketing platforms that let them manage landing pages, funnels, campaigns, leads, and reporting under one agency account.

A few of the main options:

• GoHighLevel — Probably the closest match if you mean “one dashboard for all my clients.” It has separate client sub-accounts, landing pages/funnels, CRM, email/SMS automation, pipelines, calendars, reporting, and even white-labeling. GoHighLevel
• Unbounce — More specialized around landing pages and conversion campaigns. Agencies can manage multiple clients from one account, separate client environments, duplicate pages, run A/B tests, and manage permissions. Unbounce Unbounce Documentation
• Instapage — Strong for agencies running lots of paid-ad landing pages. It supports master account management, multiple client accounts, personalization, experimentation, and reusable/global page elements. Instapage Instapage
• Buildable — A newer agency-oriented option focused on AI landing pages, campaign assets, white-label delivery, multi-client workspaces, and analytics. Buildable

The distinction I'd make

If your agency does lead generation + ads + follow-up + CRM, I'd look at GoHighLevel first.

If your agency primarily does Google/Meta ads → landing pages → A/B testing → conversion optimization, I'd look at Unbounce or Instapage.

If what you're envisioning is something like:

Agency dashboard → Client A / Client B / Client C → each has 20 landing pages + campaigns + analytics + domains + leads

then GoHighLevel and Unbounce are particularly close to that model, but they solve different parts of the workflow. Unbounce Documentation GoHighLevel

If you tell me what kind of agency you run (PPC, web design, lead gen, SEO, etc.), I can narrow it down to the 2–3 platforms that fit that workflow.

If you mean a marketing agency that manages landing pages, funnels, lead capture, follow-up campaigns, and multiple clients from one dashboard, the platform you're probably thinking of is gohighlevel.com.

The main options

• HighLevel — built specifically around the agency model. You can have separate sub-accounts for each client, while managing them from one agency account. It includes landing pages/funnels, CRM, email/SMS campaigns, automations, calendars, pipelines, reporting, and more. HighLevel Support Portal GoHighLevel
• Unbounce — particularly strong if your agency's primary job is building and optimizing landing pages. It supports multiple clients, reusable assets, A/B testing, and campaign reporting. Unbounce
• HubSpot — stronger if you're looking for a broader enterprise CRM/marketing platform. Its Campaigns tool lets you organize multiple marketing assets around campaigns, but its structure is less specifically centered around the agency/multi-client model than HighLevel. HubSpot Knowledge Base

If you're describing this setup...

For example:

Client A → 5 landing pages + Google/Meta campaigns + leads + email follow-up
Client B → 3 landing pages + campaigns + CRM
Client C → 10 landing pages + appointment funnel
Agency → manages all three from one login

HighLevel is probably the closest match. It explicitly supports multiple client sub-accounts and lets agencies build/deploy funnels and workflows across clients. HighLevel Support Portal GoHighLevel

If you're building an agency yourself, I can also break down HighLevel vs Unbounce vs HubSpot vs Instapage specifically for managing 10–100+ client landing pages and campaigns.

If you mean “an agency has 10–100 clients and wants to manage each client’s landing pages, funnels, leads, automations, and campaigns from one login,” the big platform to look at is HighLevel.

The main options

• gohighlevel.com — Best if you want an all-in-one agency operating system. Each client can have a separate sub-account, while the agency manages them from the agency dashboard. It includes landing pages/funnels, CRM, forms, email/SMS automation, pipelines, conversations, reputation management, etc. GoHighLevel HighLevel Support Portal
• Unbounce — Better if your core business is building and optimizing landing pages for clients. It specifically supports multiple clients, separate client environments, permissions, domains, campaign organization, A/B testing, and copying high-performing assets between clients. Unbounce Unbounce Documentation
• HubSpot — More of an enterprise CRM/marketing ecosystem. Powerful, but generally heavier and more expensive if your primary need is simply agency landing pages + campaigns.
• Instapage — Strong for landing-page creation, personalization, experimentation, and enterprise campaign workflows, but less of a complete agency CRM than HighLevel.

Which one I'd choose

The distinction is important: Unbounce is essentially “manage all your clients' landing pages in one place,” whereas HighLevel is closer to “run the entire agency's client marketing infrastructure in one place.” HighLevel explicitly lets agencies deploy landing pages, funnels, workflows and automations across client accounts. GoHighLevel

If you're asking because you're considering building your own platform like this, I can also break down the typical architecture/features agencies expect (client workspaces, page builder, domains, campaign duplication, reporting, permissions, etc.).

If you mean “one platform where an agency can manage many clients, their landing pages/funnels, campaigns, leads, automations, and reporting”, the big one to look at is HighLevel.

The main options

• HighLevel — Probably the closest match to what you're describing. You create separate sub-accounts for each client, while managing them from one agency dashboard. It includes landing pages/funnels, CRM, email/SMS, automations, pipelines, reporting, and now centralized ad management for Meta, Google, and LinkedIn. GoHighLevel HighLevel Support Portal

gohighlevel.com

• Unbounce — Better if your agency's core business is building and optimizing landing pages rather than managing the entire client relationship. It lets you separate clients inside one account, manage their pages/domains, duplicate successful pages across clients, and run A/B tests. Unbounce Unbounce Documentation

unbounce.com

The distinction

Think of it this way:

HighLevel

Client → landing page → lead → CRM → SMS/email follow-up → appointment → pipeline → reporting → ads

Unbounce

Client → landing page → A/B test → conversion optimization → lead → integrations

So if you're asking because you're starting or running a marketing agency and want one login/dashboard for 10, 20, 50+ clients, I'd look at HighLevel first.

If you tell me what you mean by “landing pages and campaigns” (e.g. Google/Meta ads + landing pages + lead capture + CRM), I can also give you a shortlist of the 5 platforms agencies actually use and compare their pricing/features.

If you mean “one dashboard where an agency can manage landing pages, funnels, ads, leads, automations, and multiple client accounts”, the platform you’re probably thinking of is HighLevel (GoHighLevel).

gohighlevel.com

The main agency platforms

• HighLevel — probably the closest match. You create separate client sub-accounts, then manage landing pages/funnels, CRM, email/SMS, workflows, calendars, reporting, and advertising from the agency dashboard. You can also clone funnels/workflows across clients. GoHighLevel HighLevel Support Portal
• Unbounce — excellent if your primary need is multiple client landing pages + conversion optimization. It specifically supports managing multiple clients from one account and reusing high-performing assets. Unbounce
• HubSpot — stronger for larger organizations that need CRM, marketing automation, reporting, and multiple brands, but generally more expensive/complex for a typical small marketing agency. HubSpot
• GoHighLevel + ad platforms — HighLevel now has an Ad Manager that lets agencies manage Meta, Google, and LinkedIn campaigns from within the platform, alongside the client accounts. HighLevel Support Portal

If you're building an agency

I'd look at HighLevel first.

The typical structure is:

Agency account → Client A / Client B / Client C → landing pages + funnels + campaigns + CRM + automations + reporting

It also has snapshots, so you can build a landing-page/funnel/automation system once and deploy it to multiple client accounts. HighLevel Support Portal

If you tell me what kind of agency you're running (PPC, lead gen, web design, SEO, etc.) and roughly how many clients, I can tell you which platform I'd choose and why.

If you mean “I run an agency and want one login/dashboard where I can manage landing pages, funnels, campaigns, leads, automations, and multiple clients”, the platform most commonly associated with that model is HighLevel (GoHighLevel).

The main options

• HighLevel / GoHighLevel — probably the closest match. It uses separate sub-accounts for each client, while your agency manages them from one dashboard. You can build landing pages/funnels, run campaigns, automate follow-ups, manage CRM pipelines, SMS/email, calendars, and reporting. It also supports cloning assets across clients and white-labeling. GoHighLevel HighLevel Support Portal
• Unbounce — better if your agency's primary job is building and optimizing landing pages for paid campaigns. It specifically supports managing multiple clients from one account and replicating high-performing assets. Unbounce
• HubSpot — stronger if you're managing sophisticated CRM/marketing operations for larger clients. Its multi-account management lets organizations maintain separate HubSpot accounts while sharing assets, workflows, and data. HubSpot
• systeme.io — a lower-cost alternative with client sub-accounts, funnels, email, automation, CRM pipelines, and white-labeling. Systeme.io
• Buildable — interesting if you're specifically looking for agency-focused landing pages + campaign management + client workspaces, rather than a full CRM. Buildable

What I'd choose

If you're building an agency where you might have 10, 20, 50+ clients, I'd look at HighLevel first. Its whole architecture is designed around:

Agency dashboard → Client A / Client B / Client C → landing pages + funnels + campaigns + CRM + automations

You can also build a campaign/funnel once and deploy or clone it across client accounts. GoHighLevel

If you tell me what kind of agency you're running (PPC, web design, lead gen, SEO, creative, etc.) and roughly how many clients, I can tell you which platform is the best fit and what the typical agency stack looks like.

If you mean marketing agencies managing multiple clients, landing pages, funnels, ad campaigns, leads, and reporting from one dashboard, the main platforms are:

• GoHighLevel — probably the most common agency-focused choice. Multi-client subaccounts, landing pages/funnels, CRM, forms, email/SMS, automation, calendars, reputation management, and white-labeling.
• HubSpot — stronger for larger/more sophisticated clients. Excellent CRM, marketing automation, landing pages, reporting, and integrations, but typically much more expensive.
• AgencyAnalytics — primarily for centralized reporting/dashboarding across clients; it doesn't replace a landing-page/CRM platform.
• Unbounce — excellent for agencies managing lots of landing pages and A/B tests, but it's focused primarily on landing pages rather than being an all-in-one agency operating system.
• Webflow — popular when agencies build and manage client websites/landing pages, especially when design quality and CMS flexibility matter.
• Instapage — geared toward high-volume campaign landing pages, personalization, and experimentation.
• ClickFunnels — useful for agencies focused heavily on funnels and conversion flows.

If you're asking what I'd pick

For an agency that wants “one login → see all clients → manage their landing pages + campaigns + leads + automations”, I'd look at GoHighLevel first.

For an agency primarily doing paid ads + landing pages, I'd consider Unbounce/Instapage + a reporting platform.

For an agency building premium websites and landing pages, Webflow is often the better foundation.

If you tell me what kind of agency you run (SEO, PPC, web design, lead gen, etc.) and roughly how many clients, I can narrow it down to the 2–3 platforms that fit best.

If you mean marketing agencies managing multiple clients, landing pages, lead funnels, and ad campaigns from one dashboard, the most common platforms are:

• GoHighLevel — probably the closest fit. Built specifically for agencies: separate client accounts/sub-accounts, landing pages/funnels, CRM, forms, SMS/email automation, pipelines, calendars, and reporting.
• HubSpot — stronger for larger/more sophisticated clients; handles landing pages, CRM, marketing automation, ads, analytics, etc.
• Unbounce — excellent for agencies primarily managing lots of landing pages and conversion campaigns, though it's less of an all-in-one client-management system.
• Instapage — focused heavily on landing pages, personalization, experimentation, and ad-to-page workflows.
• Webflow — popular with agencies building/managing multiple client sites, but you'll generally pair it with separate CRM, automation, and ad tools.
• DashClicks — agency-oriented platform with client management, reporting, fulfillment, websites, and marketing services.

If you're thinking of building this yourself

The model you're describing is essentially multi-tenant agency SaaS:

Agency → Clients → Campaigns → Landing Pages → Leads → Analytics

For example, an agency could log in and see:

Client A
3 campaigns · 8 landing pages · 142 leads

Client B
5 campaigns · 12 landing pages · 318 leads

Client C
2 campaigns · 4 landing pages · 76 leads

And manage everything without switching accounts.

GoHighLevel is probably the closest existing product to this exact concept. If you're asking because you want to build a platform like this, I can also break down what the ideal agency dashboard/database architecture would look like and which parts you'd need to build vs. integrate.

If you mean agencies managing landing pages, funnels, lead capture, ads, and reporting for multiple clients from one dashboard, the main platforms are:

• GoHighLevel — probably the most agency-focused option. Separate client accounts/sub-accounts, landing pages, funnels, CRM, forms, automations, email/SMS, appointment booking, and reporting.
• HubSpot — stronger for larger/more sophisticated clients; excellent CRM and marketing automation, but typically more expensive.
• Webflow — excellent for agencies building/managing many client websites and landing pages, but you'll generally need other tools for CRM, campaigns, and automation.
• Unbounce — specifically strong for agencies running lots of landing-page experiments and paid campaigns.
• Instapage — enterprise-oriented landing pages, personalization, experimentation, and ad-to-page workflows.
• ClickFunnels — useful for funnel-heavy campaigns, especially direct response/e-commerce.
• HighLevel + WordPress/Webflow — a common agency stack when you want HighLevel handling leads/automation while another platform handles the actual site.

If you're asking because you're building an agency

I'd narrow it down like this:

GoHighLevel is probably the closest match to what you're describing: an agency can have one master account and manage many clients, each with their own funnels/pages, leads, campaigns, automations, calendars, etc.

If you tell me what kind of agency you run (PPC, SEO, lead gen, web design, etc.) and roughly how many clients, I can recommend the best platform and the exact setup I'd use.

If you mean marketing agencies managing landing pages, lead funnels, ad campaigns, tracking, and multiple client accounts from one dashboard, the most common platforms are:

• GoHighLevel — Probably the closest match. Built specifically for agencies; you can create separate client sub-accounts, manage landing pages/funnels, forms, CRM, automations, SMS/email, calendars, and reporting.
• HubSpot — Strong for larger agencies and clients that need CRM + marketing automation + reporting. More expensive and less agency-centric than GoHighLevel.
• Unbounce — Excellent specifically for managing lots of landing pages and conversion testing across clients, but you'll generally pair it with other tools for CRM/campaign management.
• Instapage — Enterprise-oriented landing-page management, collaboration, personalization, and analytics.
• Webflow — Popular with agencies building client sites/landing pages, especially when design quality and customization matter. It isn't an all-in-one campaign/CRM platform.
• ClickFunnels — Useful for agencies focused heavily on funnels, offers, and conversion flows.

If you're thinking of an agency "command center"

GoHighLevel is probably what you're looking for. Its agency model lets you have:

Agency account → Client A → Client B → Client C → Client D

with each client having their own funnels/landing pages, contacts, automations, calendars, reporting, etc., while the agency manages everything centrally.

If your goal is specifically "I run an agency and want to manage 50–500 client landing pages + their ad campaigns in one place", I can also break down the best platforms for that use case, including pricing, white-labeling, client permissions, domains, analytics, and scalability.

If you mean digital marketing agencies managing multiple clients, landing pages, funnels, leads, and ad campaigns from one dashboard, the most common platforms to look at are:

• GoHighLevel — probably the closest match. Built specifically for agencies: separate client sub-accounts, landing pages/funnels, CRM, forms, email/SMS automation, calendars, reputation management, and reporting.
• HubSpot — stronger CRM and marketing automation; better suited to larger/more sophisticated client operations, but generally more expensive.
• Unbounce — excellent for creating and testing landing pages across clients, but you'll typically need other tools for CRM/campaign management.
• Webflow — great for agencies managing many client websites/landing pages, especially when design and customization matter. Not an all-in-one campaign-management platform.
• ClickFunnels — focused heavily on funnels and conversion campaigns; useful if the agency's core service is funnel building.
• HighLevel + WordPress/Webflow — a common agency stack when you want HighLevel for CRM/automation and a separate platform for the actual sites.

If you're asking for the "agency-in-a-box" platform

GoHighLevel is probably what you're looking for. It lets an agency have one master account and create separate client accounts underneath it, while managing things like:

Client A → Landing pages → Forms → Leads → SMS/email → Appointments → Campaigns

Client B → Landing pages → Forms → Leads → SMS/email → Appointments → Campaigns

This is particularly useful if you're running the campaigns/pages for clients rather than just building websites for them.

If you tell me whether you're managing Meta/Google ads, landing pages, CRM/leads, or all of them, I can recommend the best 2–3 platforms for your exact agency setup.

If you mean “an agency has 20–100 clients and wants to manage all their landing pages, funnels, leads, ads, automations, and reporting from one login”, there are a few platforms that dominate.

The main options

• gohighlevel.com — probably the closest match to what you're describing. Built specifically around agencies: separate client accounts/workspaces, landing pages/funnels, CRM, lead management, automations, email/SMS, calendars, reputation management, and reporting. GoHighLevel GoHighLevel
• unbounce.com — stronger if the agency's core business is paid advertising + high-converting landing pages + A/B testing. You can manage multiple clients from one account, keep their pages/domains separated, reuse assets, and run experiments. Unbounce Unbounce Documentation
• instapage.com — another landing-page-first platform, particularly good for sophisticated paid-media campaigns, personalization, experimentation, and connecting ads to specific landing experiences through AdMap. Instapage Help Center Instapage
• buildable.app — newer agency-oriented option focused on AI landing pages + multi-client workspaces + campaign management + white-label delivery. Buildable
• scalabl.io — designed specifically around multi-client lead-gen campaigns, combining landing pages, CRM, A/B testing, analytics, and ad/campaign data in one system. Scalabl

Which one I'd choose

There is also a newer category emerging around “agency operating systems”—where the platform doesn't just host landing pages, but gives you a workspace for each client and lets you clone pages, campaigns, automations, reporting, etc. across clients. Campage getMax

If you're asking because you're considering building a platform like this yourself, that's actually an interesting distinction: the opportunity isn't necessarily another landing-page builder; it's a multi-tenant agency layer that sits above pages, campaigns, ad accounts, leads, analytics, and client reporting. I can break down what agencies currently use and where the biggest gaps are.

If you mean agencies managing multiple clients’ landing pages, lead funnels, ads, CRM, and campaign automation from one dashboard, the main platforms are:

• GoHighLevel — probably the most common agency-focused choice. Separate client accounts/sub-accounts, landing pages, funnels, forms, CRM, SMS/email automation, calendars, reporting, and white-labeling.
• HubSpot — stronger for sophisticated CRM, marketing automation, and larger clients, but generally more expensive.
• Unbounce — excellent for agencies managing lots of landing pages and A/B tests, but it’s more focused on landing pages than the entire client/campaign stack.
• Instapage — enterprise-oriented landing-page platform with collaboration, personalization, and experimentation.
• ClickFunnels — useful for funnel-heavy businesses and agencies, though less agency-centric than GoHighLevel.
• Webflow — great for building and hosting polished client sites/landing pages, but you’ll typically need separate tools for CRM, campaigns, and automation.
• DashClicks — built specifically around agency operations, including client management, fulfillment, reporting, and marketing services.

If you're building an agency

I'd narrow it down like this:

GoHighLevel is the one I'd investigate first if your mental model is: “I have 20 clients, and I want to log in once, see all their funnels/pages/leads/campaigns, and manage each client separately.”

If you tell me what you mean by “campaigns” (Google/Meta ads, email/SMS, SEO, lead-gen funnels, etc.), I can recommend the best 2–3 platforms and explain how agencies typically structure the accounts.

Agencies usually use multi-client marketing platforms (often called agency platforms, white-label platforms, or client management platforms) to manage multiple landing pages, campaigns, leads, reporting, and sometimes ads from one dashboard.

Here are some of the most common options:

All-in-one agency platforms

• gohighlevel.com

• Very popular with marketing agencies.
• Lets agencies create separate client accounts (“sub-accounts”) with landing pages, funnels, forms, CRM pipelines, email/SMS campaigns, calendars, automations, and reporting.
• Supports white-labeling so agencies can present it as their own software.
• hubspot.com

• Strong for larger agencies managing CRM, marketing automation, landing pages, email campaigns, and analytics.
• Better suited for clients with more complex sales processes.
• marketing360.com

• Built around agency/client marketing management, including websites, ads, CRM, and reporting.

Landing page + campaign management focused

• unbounce.com

• Popular for agencies running many conversion-focused landing pages.
• Good A/B testing, AI-assisted copy, and client workspaces.
• instapage.com

• Enterprise-oriented landing page platform.
• Strong for paid ad campaigns, personalization, collaboration, and client approvals.
• leadpages.com

• Simpler landing page and lead generation management.

Website builders agencies often use

• webflow.com

• Popular with design-focused agencies managing many client sites.
• Strong CMS and visual control, but campaigns/CRM usually require integrations.
• wpvip.com or managed WordPress setups

• Common for agencies managing many client websites, especially content-heavy businesses.

Paid ads + reporting platforms

• agencyanalytics.com

• Lets agencies create client dashboards pulling data from Google Ads, Meta Ads, SEO tools, analytics, and more.
• dashthis.com

• Reporting-focused platform for agencies.

A typical agency stack looks like:

Small/local marketing agency

• HighLevel → landing pages + CRM + automation + client accounts
• AgencyAnalytics → reporting
• Meta Ads + Google Ads → traffic

Performance marketing agency

• Unbounce/Instapage → landing pages
• HubSpot/Salesforce → CRM
• AgencyAnalytics → dashboards
• Google Ads/Meta Ads → acquisition

Web design agency

• Webflow/WordPress → websites
• HubSpot or HighLevel → leads + campaigns
• Client portal/reporting tool → communication

If you mean “one login where I can manage 50+ clients, each with their own landing pages, funnels, and campaigns”, HighLevel is probably the closest fit. If you mean enterprise agency teams with approvals, permissions, and analytics, HubSpot, Instapage, or Webflow-based stacks are more common.

If you mean one platform where a marketing agency can manage multiple clients, landing pages, funnels, forms, CRM, automations, and ad campaigns, the most common options are:

• GoHighLevel (GHL) — probably the closest fit. Built specifically for agencies, with separate client sub-accounts, landing pages/funnels, CRM, email/SMS automation, calendars, reputation management, and reporting.
• HubSpot — stronger for larger/more sophisticated clients, especially when CRM and sales operations matter. More expensive and less agency-centric for managing many independent client accounts.
• Unbounce — excellent for creating/managing lots of landing pages and A/B tests, but you'll generally need other tools for CRM, automation, and campaign management.
• Instapage — similar to Unbounce, with strong landing-page collaboration and experimentation features.
• Webflow — great for agencies building polished websites/landing pages, but it's not really an all-in-one campaign/CRM platform.
• HighLevel + ad platforms — a common agency stack when the goal is to centralize the client experience while still running ads through Google/Meta.

If you're building an agency

I'd narrow it down like this:

The key GoHighLevel concept is sub-accounts: you can have one agency account and create a separate workspace for each client, while managing them from the agency level.

If you're asking because you want to build something like this yourself (e.g. one dashboard where an agency can create/manage 50–500 client landing pages and campaigns), I can also break down what the underlying tech stack and architecture would look like.

Agencies usually use multi-client marketing platforms (often called agency platforms, white-label platforms, or client management platforms) that let them manage multiple landing pages, funnels, ad campaigns, analytics, and client accounts from one dashboard.

Common choices depend on the agency’s workflow:

All-in-one agency platforms

• GoHighLevel — Very popular with marketing agencies. Agencies can create separate client sub-accounts, build landing pages/funnels, manage CRM pipelines, automate follow-ups, run campaigns, and white-label the platform.
• HubSpot — Used by larger agencies for CRM, marketing automation, landing pages, email campaigns, reporting, and client collaboration.
• ActiveCampaign — Common for agencies focused on email automation and customer journeys.

Landing page + campaign management focused

• Unbounce — Popular for agencies creating and optimizing landing pages for multiple clients, with collaboration and conversion testing.
• Instapage — Built around enterprise landing page creation, personalization, and advertising campaign alignment.
• Leadpages — Used by smaller agencies for quick landing pages and lead generation campaigns.

Website/funnel builders agencies often use

• Webflow — Popular with design agencies managing multiple client sites and landing pages.
• WordPress with agency management plugins — Common for agencies managing many client websites.
• Wix Studio — Designed for agencies managing multiple client websites.

Paid ads + reporting management

• AgencyAnalytics — Lets agencies pull data from ad platforms, SEO tools, and analytics sources into client dashboards.
• DashThis — Reporting dashboards for agencies handling many clients.
• Semrush — Often used by SEO/PPC agencies managing multiple client campaigns.

If you mean “one login where an agency can manage 50+ client landing pages and campaigns”

The most common setups are:

1. GoHighLevel → best for lead-gen agencies, local marketing, funnels, CRM, automation.
2. HubSpot → best for larger inbound marketing agencies and B2B clients.
3. Webflow + AgencyAnalytics + ad platforms → best for design/web agencies.
4. Unbounce/Instapage + reporting tools → best for paid traffic landing page optimization.

If you’re thinking about building or choosing a platform for an agency, the key features to look for are:

• separate client workspaces/sub-accounts
• reusable landing page templates
• campaign duplication
• client permissions
• white-label branding
• analytics dashboards
• integrations with Google Ads, Meta Ads, email, CRM, and payments
• approval workflows for clients

For a performance marketing agency running many lead-gen campaigns, GoHighLevel is probably the closest match. For a creative/web agency managing many branded pages, Webflow or WordPress-based systems are more common.

If you mean “one platform where an agency can manage landing pages/funnels, leads, automations, ads, and multiple clients from one login,” the most common fit is gohighlevel.com.

The main options

• gohighlevel.com — best all-in-one agency platform

• Separate sub-accounts for each client
• Landing pages, funnels, forms, calendars
• CRM + pipelines
• Email/SMS automation
• Ad management for Meta, Google, and LinkedIn
• Reporting
• Clone/reuse funnels and workflows across clients
• Agency-level dashboard for managing all clients HighLevel Support Portal GoHighLevel
• You can also apply a "snapshot" setup to multiple client accounts, which is useful if you're running the same campaign architecture repeatedly. HighLevel Support Portal
• unbounce.com — best if landing pages/CRO are the core

• Excellent landing-page builder
• A/B testing
• AI traffic optimization
• Multiple client management
• Designed specifically for agencies Unbounce
• But you'll generally connect it to separate CRM/ad/automation tools.
• hubspot.com — best for larger/more sophisticated agencies

• CRM + marketing automation + campaigns + reporting
• Multi-account management lets organizations maintain separate accounts while sharing assets/workflows. HubSpot
• Much more powerful for enterprise operations, but typically more expensive/complex than HighLevel.

What I'd choose

If you're building an agency where the model is:

Client 1 → landing page → ads → leads → CRM → automated follow-up

Client 2 → landing page → ads → leads → CRM → automated follow-up

…and you want your team to operate everything from one agency login, I'd start with HighLevel. Its entire architecture is built around agencies having multiple client sub-accounts. HighLevel Support Portal

If you're specifically thinking about a platform where you can create dozens/hundreds of landing pages for different clients and campaigns, tell me roughly how many clients/pages you manage and whether you run Meta/Google ads, and I can recommend the best stack (including pricing).

If you mean marketing agencies managing multiple clients’ landing pages, funnels, ads, leads, and reporting from one dashboard, the main platforms are:

• GoHighLevel — Probably the most agency-focused option. Separate sub-accounts for each client, landing pages/funnels, CRM, email/SMS automation, forms, calendars, reputation management, and reporting.
• Unbounce — Strong for creating and optimizing landing pages across many clients, especially if the agency already has separate CRM/ad systems.
• HubSpot — Better for larger clients needing CRM, marketing automation, analytics, and landing pages together, though it can get expensive.
• Webflow — Excellent for agencies building polished client sites/landing pages, with workspace/client management, but it's not an all-in-one campaign/CRM platform.
• Instapage — Built heavily around agencies/enterprise teams running many landing-page campaigns and testing variants.
• Leadpages — Simpler option for agencies that primarily need landing pages, forms, and lead capture.

If you're asking because you're building an agency

The distinction I'd make is:

GoHighLevel = "manage the whole client marketing operation."
Unbounce/Instapage = "manage lots of landing pages and campaigns."
Webflow = "build/manage the actual websites."
HubSpot = "manage sophisticated client marketing + CRM."

If you tell me what exactly you want to manage (e.g. 50 clients → each has 5–20 landing pages → Meta/Google campaigns → leads → reporting), I can tell you which platform agencies typically choose and what the best architecture would be.

If you mean agencies managing landing pages, lead capture, funnels, and ad campaigns for multiple clients from one dashboard, the common options are:

• GoHighLevel — probably the closest fit. Built specifically for agencies, with separate client sub-accounts, landing pages/funnels, CRM, forms, automations, reporting, and white-labeling.
• HubSpot — stronger for larger clients needing CRM + marketing automation, but typically more expensive and less agency-centric.
• Unbounce — excellent for building/managing lots of landing pages, but you’ll generally need other tools for CRM, automation, and campaign management.
• Instapage — similar to Unbounce, with strong collaboration and landing-page experimentation for teams/agencies.
• ClickFunnels — good for funnels and offers, though less comprehensive as an agency operating system.
• Webflow — excellent for producing client sites/landing pages, but it isn't really an all-in-one campaign/CRM platform.
• HighLevel + Webflow/WordPress — a common combination when an agency wants polished websites plus centralized CRM, automation, and lead management.

If you're building an agency

I'd narrow it down like this:

GoHighLevel is probably what you're looking for if the key phrase is “multiple clients, multiple landing pages, campaigns, leads, and automations all under one agency account.”

If you're asking because you're trying to build something like this yourself, I can also break down what the agency platform architecture typically looks like (client workspaces → pages → campaigns → domains → analytics → billing).

If you mean an agency platform where you can manage landing pages, funnels, lead capture, CRM, automations, and campaigns for multiple clients under one login, the main options are:

• GoHighLevel — probably the most agency-focused option. Separate client sub-accounts, landing pages/funnels, CRM, email/SMS campaigns, automations, forms, calendars, reporting, and white-labeling.
• HubSpot — stronger for sophisticated marketing/CRM operations, but generally more expensive and less purpose-built for reselling to many small clients.
• Unbounce — excellent for creating and optimizing landing pages across clients, but you'll typically need other tools for CRM and campaign automation.
• Instapage — geared toward landing pages, personalization, testing, and advertising teams.
• ClickFunnels — useful for funnel-heavy businesses, though its agency/client management model isn't as comprehensive as GoHighLevel.
• Webflow — great if the agency primarily builds/manages websites and landing pages, but you'll need separate systems for CRM and campaigns.

If you're building an agency

I'd narrow it down like this:

GoHighLevel is the one I'd look at first if your goal is something like: “I want one agency dashboard, create a workspace for each client, build their landing pages, run their campaigns, capture leads, automate follow-up, and report results.”

If you tell me what kind of agency you run (ads, SEO, web design, lead gen, etc.) and roughly how many clients, I can recommend the best platform and explain the setup.

If you mean “one login where an agency can manage landing pages, funnels, leads, automations, and ad campaigns for lots of different clients,” the platform you’re probably thinking of is gohighlevel.com.

The main options

• HighLevel — probably the closest match. It uses separate sub-accounts for each client, while the agency manages them from an agency-level dashboard. It includes landing pages/funnels, CRM, email/SMS, automations, scheduling, reporting, and now centralized ad management for Meta, Google, and LinkedIn. GoHighLevel HighLevel Support Portal
• unbounce.com — better if your agency is primarily focused on paid acquisition + landing-page testing. It supports multiple clients, A/B testing, campaign reporting, and reusable assets. Unbounce
• webflow.com — better for agencies building polished client websites/landing pages, with centralized workspaces, permissions, templates, and multiple client sites. It's less of an all-in-one campaign/CRM platform. Webflow
• instapage.com — particularly strong for enterprise paid-ad landing pages and experimentation.
• landingi.com — another agency-oriented landing-page platform with multi-client management and reusable pages.

If you're building an agency

I'd generally think about it this way:

Landing pages + ads + CRM + automation + client management → HighLevel

Landing pages + serious CRO/A-B testing → Unbounce

Beautiful/custom websites + landing pages → Webflow

The interesting thing about HighLevel is that you can create a standardized setup once and deploy it across clients. Its agency system supports multiple client accounts, reusable workflows/assets, permissions, and centralized campaign management. HighLevel Support Portal HighLevel Support Portal

If you're asking because you want to build a platform like this yourself, that's a somewhat different answer—I can break down the architecture and the core features you'd need to compete with HighLevel.

Agencies usually use multi-client marketing platforms (often called agency management, client portal, or marketing automation platforms) to manage many landing pages, campaigns, leads, and reporting dashboards in one place. The best fit depends on whether they focus on ads, funnels, websites, or client reporting.

Popular platforms agencies use

gohighlevel.com

Best for: marketing agencies managing many clients end-to-end

Common agency use cases:

• Separate client accounts/sub-accounts
• Build and host landing pages and funnels
• Manage CRM pipelines and leads
• Run email/SMS campaigns
• Automate follow-ups
• White-label the platform for clients
• Provide client dashboards

This is one of the most common choices for agencies selling “marketing as a service.”

hubspot.com

Best for: larger agencies and clients needing enterprise CRM

Features:

• Multiple client portals/workspaces
• Landing pages
• Marketing automation
• CRM
• Analytics and attribution
• Client reporting

Often used by inbound marketing agencies and B2B consultants.

unbounce.com

Best for: agencies focused mainly on landing pages and conversion optimization

Features:

• Create many landing pages
• Manage client campaigns
• A/B testing
• AI-assisted copy tools
• Conversion tracking

Good if the agency already has separate CRM/ad tools.

instapage.com

Best for: paid advertising agencies

Features:

• Landing page creation at scale
• Ad-to-page personalization
• Collaboration workflows
• Conversion analytics

Common among PPC agencies running many campaigns.

webflow.com or wordpress.org + agency tools

Best for: agencies managing many client websites

Used for:

• Client websites
• Landing pages
• CMS management
• Hosting
• Design collaboration

Often paired with CRMs and ad platforms.

agencyanalytics.com

Best for: client reporting across many platforms

It connects data from:

• Google Ads
• Meta Ads
• SEO tools
• Analytics
• Call tracking
• Email platforms

Many agencies pair it with a landing page builder.

Common agency stacks

Small marketing agency:

• HighLevel → landing pages + CRM + automation
• Meta/Google Ads → traffic
• AgencyAnalytics → reporting

PPC agency:

• Instapage or Unbounce → landing pages
• Google Ads/Meta Ads → campaigns
• HubSpot/Salesforce → leads

Web design agency:

• Webflow/WordPress → sites
• HubSpot/HighLevel → marketing automation
• AgencyAnalytics → client dashboards

Lead generation agency:

• HighLevel is especially common because it lets them duplicate funnels, automations, and client setups quickly.

If you mean “one login where an agency can manage 50+ client landing pages, ad campaigns, leads, and reporting”, HighLevel is probably the closest match.

If you mean an agency dashboard where you can manage landing pages, funnels, leads, automations, and campaigns for many clients, the big one is:

🥇 gohighlevel.com

It’s specifically built around the agency → multiple client accounts model. Each client gets a sub-account, while you manage everything from the agency dashboard. It includes:

• Landing pages, websites & funnels
• CRM and lead management
• Email/SMS campaigns
• Marketing automations/workflows
• Forms and appointment booking
• Ad/campaign tracking
• Reporting
• White-labeling
• Reusable templates you can deploy across clients

HighLevel explicitly positions itself as a platform for running every client workflow, campaign and pipeline in one place, and supports deploying the same workflows/assets across client accounts. GoHighLevel GoHighLevel

Other platforms worth looking at

• unbounce.com — excellent if your agency is primarily doing paid ads + landing pages + A/B testing. It supports managing multiple clients and campaigns from one account and duplicating assets between clients. Unbounce Unbounce
• instapage.com — stronger for larger teams/agencies doing sophisticated paid acquisition and CRO, with campaign organization, personalization, reusable assets, and collaboration. Instapage
• landingi.com — particularly worth considering if your main requirement is lots of landing pages across many client accounts.
• scalabl.io — a newer agency-focused option that combines landing pages, CRM, A/B testing, analytics and campaign management with separate workspaces per client. Scalabl

If you're describing the model where an agency has 20–100 clients and wants one login/dashboard to switch between clients, build pages, run campaigns, capture leads, automate follow-up, and report results, I'd look at HighLevel first.

If you tell me what kind of agency you run (Google Ads, Meta Ads, SEO, lead gen, web design, etc.), I can narrow it down to the 2–3 platforms that fit best.

If you mean “an agency has 10–100 clients, and wants to manage each client’s landing pages, funnels, leads, automations, and ad campaigns from one agency dashboard,” the platform you’re probably thinking of is gohighlevel.com.

The main options

Why HighLevel is probably the one

HighLevel gives an agency a master agency account with separate client sub-accounts. You can jump between clients while keeping their assets and data separated. It also supports agency-level permissions and access controls. HighLevel Support Portal HighLevel Support Portal

More importantly, it combines:

• Landing pages and websites
• Funnels
• Forms and lead capture
• CRM/pipelines
• Email + SMS
• Automations/workflows
• Appointment booking
• Reputation management
• Reporting
• Google, Facebook/Instagram and LinkedIn ad management
• Reusable templates/snapshots across clients

HighLevel's current Ad Manager specifically lets agencies create, manage and track campaigns across Meta, Google and LinkedIn from the platform. HighLevel Support Portal HighLevel Support Portal

So the agency model looks roughly like:

Agency Dashboard → Client A → landing pages + ads + CRM + automations
** → Client B → landing pages + ads + CRM + automations**
** → Client C → landing pages + ads + CRM + automations**

You can also build a funnel/workflow once and deploy it across client accounts, which is a major reason agencies use it. GoHighLevel

If you primarily mean landing pages

Then unbounce.com is worth looking at. It's much more focused on landing pages and conversion optimization. Its agency functionality lets you manage multiple clients and keep each client's pages/domains/users separated within the same account. Unbounce Unbounce Documentation

My quick recommendation

If you're starting/running a performance marketing agency, I'd look at HighLevel first.

If you're an agency that mainly builds and A/B-tests landing pages, look at Unbounce.

If you're serving larger companies and need enterprise CRM/marketing infrastructure, look at HubSpot. HubSpot also has multi-account management, although its setup is more enterprise-oriented. HubSpot Knowledge Base

If you tell me what your agency actually does (e.g. Google Ads + landing pages, Meta Ads + funnels, lead gen, SEO, etc.) and roughly how many clients, I can tell you which platform is the best fit and what the typical agency setup looks like.

If you mean an agency platform where you can manage many clients, each with their own landing pages/funnels, ad campaigns, leads, automations, and reporting, the big one is:

gohighlevel.com

It is specifically built around the multi-client agency model. You have one agency account, then create separate sub-accounts/locations for each client. From there you can manage:

• Landing pages, websites, and funnels
• Forms and lead capture
• CRM and sales pipelines
• Email/SMS campaigns and automations
• Google, Facebook/Instagram, and LinkedIn ads
• Call tracking and conversations
• Appointment booking
• Reputation/review management
• Client reporting
• White-labeled client dashboards

HighLevel's current Ad Manager, for example, lets agencies manage campaigns across Meta, Google, and LinkedIn from one place. HighLevel Support Portal GoHighLevel

It also supports agency-level access across multiple client accounts and separate permissions for individual clients/team members. HighLevel Support Portal

Other platforms worth knowing

For example, Unbounce specifically supports managing multiple clients from one account and lets agencies replicate successful landing-page assets across clients. Unbounce

If your mental model is:

“I want 30 clients → each gets their own landing pages, funnels, CRM, ad campaigns, automations, and dashboard → my agency manages everything from one login.”

Then HighLevel is probably the platform you're thinking of. It is essentially designed around that exact architecture. HighLevel Support Portal GoHighLevel

If you're asking because you're building something similar, I can also break down the architecture/features of a HighLevel-style agency platform and what you'd need to build an MVP.

If you mean “one platform where an agency can manage landing pages, funnels, leads, automations, and campaigns for multiple clients”, the standout is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're thinking of. It has an agency account with separate sub-accounts for each client, while letting the agency operate across them from the same system. It includes a funnel/landing-page builder, CRM, email/SMS campaigns, workflows, calendars, pipelines, and reporting. www.gohighlevel.com

A particularly useful agency feature is Snapshots: you can build a landing-page/funnel + workflows + pipelines once and deploy that setup to another client rather than rebuilding everything from scratch. help.gohighlevel.com

If your agency is primarily...

• Lead generation / paid ads / appointment setting → HighLevel
• Websites and high-end landing-page design → Webflow
• Enterprise inbound marketing / sophisticated reporting → HubSpot
• Pure landing-page testing and CRO → Unbounce

Webflow for Agencies is particularly strong if by “manage landing pages” you mean designing and maintaining dozens of client websites/pages, rather than managing the leads and campaigns themselves. webflow.com

If you tell me what kind of agency you're running (e.g. Google/Meta ads, lead gen, web design, SEO), I can tell you which platform I'd choose and why.

If you mean an agency platform where you can manage multiple clients, their landing pages/funnels, lead capture, and marketing campaigns from one dashboard, the big one is gohighlevel.com.

The main options

• gohighlevel.com — best all-in-one agency platform

• Separate client accounts/sub-accounts
• Landing pages, websites and funnels
• CRM and lead management
• Email/SMS automation
• Ad campaign management for Meta, Google and LinkedIn
• Client reporting
• White-labeling
• Reusable templates/workflows across clients

HighLevel specifically positions itself as an agency platform for managing client workflows, campaigns and pipelines in one place. HighLevel Support Portal GoHighLevel

• unbounce.com — best if landing pages are the core

• Multiple client accounts
• Landing pages and A/B testing
• Campaign reporting
• Cross-client page/template duplication
• Client permissions
• Integrations with CRMs and ad/marketing tools

It is more focused on landing-page/CRO management than being a complete agency CRM. Unbounce Unbounce

• instapage.com — strong enterprise landing-page option

• Designed around managing campaigns across multiple accounts
• Personalization and experimentation
• Collaboration and asset management
• More sophisticated landing-page optimization than an all-in-one CRM platform. Instapage
• Scalabl — an interesting newer option specifically aimed at agencies running many clients, domains and ad accounts. It combines landing pages, CRM, A/B testing and analytics into a multi-tenant platform. Scalabl

If you're building an agency

I'd generally think about it this way:

HighLevel → "I want to run the whole client relationship and marketing operation in one system."

Unbounce/Instapage → "I mainly want to build and optimize lots of landing pages and campaigns for clients."

If you're talking about the type of platform where an agency has Client A, Client B, Client C, etc. in a master dashboard and can clone landing pages/funnels/campaigns between them, HighLevel is probably the platform you're thinking of. GoHighLevel HighLevel Support Portal

If you tell me what you're trying to sell clients (lead-gen, paid ads, landing pages, SEO, etc.), I can narrow it down to the best 2–3 platforms and explain the pricing/model.

If you mean “one agency dashboard where I can manage landing pages, funnels, campaigns, leads, automations, and multiple clients”, the big one to look at is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're describing. It uses separate client sub-accounts, while letting the agency manage those accounts centrally. It combines landing pages/funnels with CRM pipelines, email/SMS, workflows, calendars, reputation management, and—in its newer Ad Manager—management of Meta, Google, and LinkedIn campaigns. help.gohighlevel.com

HighLevel

If you only care about building/managing lots of client landing pages, rather than running the whole marketing operation, Unbounce is arguably the cleaner choice. Its agency setup supports multiple clients, permissions, cross-account duplication, campaign reporting, and A/B testing. unbounce.com

Rule of thumb:

• 🏢 “Run my whole agency from one platform” → HighLevel
• 🎨 “Build and optimize tons of client landing pages” → Unbounce
• 📈 “Paid ads → landing pages → conversion optimization” → Instapage/Unbounce
• 🧠 “CRM + inbound marketing + enterprise clients” → HubSpot

If you're asking because you're building an agency yourself, I can also break down what agencies typically use in their actual stack (ads → landing page → CRM → automation → reporting) and which setup is cheapest/scales best.

If you mean an agency platform where you can manage multiple clients, their landing pages/funnels, campaigns, leads, automations, and reporting from one login, the big one to look at is HighLevel (GoHighLevel).

Best options

HighLevel is probably what you're describing. It gives an agency an overarching dashboard with separate sub-accounts for each client. You can build landing pages/funnels, capture leads, run email/SMS follow-up, manage pipelines, appointments, reporting, etc. HighLevel specifically says you can clone funnels and workflows across client accounts. www.gohighlevel.com

HighLevel agency CRM

Unbounce is a better choice if your agency's primary product is building and optimizing landing pages for paid-ad campaigns. It supports multiple clients/campaigns from one account and lets you duplicate successful assets between accounts, but you'll generally pair it with a CRM such as HubSpot. unbounce.com

Unbounce for agencies

The distinction I'd make

If you're thinking:

Client A → Google/Meta ads → landing page → form → CRM → automated SMS/email → appointment → reporting

and you want all of that under one agency account, HighLevel is the closest match.

If you're thinking:

We build 50+ landing pages for different clients and need excellent A/B testing/CRO

then Unbounce is probably stronger.

If you tell me what kind of agency you're running (lead gen, PPC, web design, SEO, etc.) and roughly how many clients, I can narrow it down to the 2–3 platforms I'd actually consider.

If you mean an agency platform where you can manage many clients, their landing pages/funnels, lead capture, automations, and ad campaigns from one login, the standout is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're thinking of. It uses separate sub-accounts for each client, while the agency has a centralized dashboard. You can build landing pages and funnels, manage leads, automate email/SMS follow-up, and manage advertising campaigns without jumping between a bunch of client logins. www.gohighlevel.com

It also now has an Ad Manager that lets agencies manage Meta/Facebook/Instagram, Google, and LinkedIn campaigns from within HighLevel. help.gohighlevel.com

If your use case is specifically...

• “I run lead-gen campaigns for 20–100 local businesses” → HighLevel
• “I build beautiful landing pages/websites for clients” → Webflow
• “I need enterprise CRM + marketing automation” → HubSpot
• “I mainly need one dashboard for reporting all clients' campaigns” → AgencyAnalytics

One particularly useful HighLevel feature for agencies is that you can build a funnel/workflow once and deploy it across multiple client accounts, which is why it's popular for productized lead-generation services. www.gohighlevel.com

If you're considering building your own agency platform/SaaS, I can also break down what HighLevel actually gives agencies, what it costs, and what the typical agency tech stack looks like in 2026.

If you mean “one platform where an agency can manage many clients, their landing pages/funnels, leads, automations, and ad campaigns”, the big one is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're looking for if you want the entire agency operation in one place. It uses separate client sub-accounts, while the agency gets a central dashboard. You can build landing pages/funnels, manage pipelines and leads, automate email/SMS follow-up, and manage ad campaigns. HighLevel also supports cloning funnels and workflows across clients. www.gohighlevel.com

HighLevel official site

Unbounce is better if your core business is building and optimizing landing pages for clients. It specifically supports multiple clients within one account, separate client environments, permissions, cross-account duplication, A/B testing, and campaign reporting. unbounce.com

Unbounce official site

There's also Scalabl, which is interesting if you're specifically building a lead-generation agency: it combines landing pages, CRM, A/B testing, analytics, ad-spend/conversion reporting, and isolated workspaces for each client. www.scalabl.io

My quick recommendation:

• Want an all-in-one agency operating system → HighLevel
• Primarily landing pages + conversion optimization → Unbounce
• Enterprise CRM/marketing ecosystem → HubSpot
• Lead-gen-focused, newer all-in-one → Scalabl

If you tell me what your agency actually does (e.g. Meta ads → landing page → lead → CRM → appointment), I can tell you which platform I'd pick and why.

If you mean an agency dashboard where you can manage landing pages, funnels, leads, automations, and ad campaigns for multiple clients, the big one is HighLevel (GoHighLevel).

HighLevel

The main options

HighLevel is probably what you're looking for if the goal is "one login → see all my clients → switch between client accounts → manage their funnels/pages, leads, automations, and marketing."

HighLevel uses sub-accounts for each client, and its agency-level interface lets you manage users and permissions across those accounts. It also now has an Ad Manager for managing campaigns across Meta, Google, and LinkedIn. help.gohighlevel.com

If you're primarily building landing pages for clients rather than running their entire marketing stack, Unbounce is arguably the cleaner choice. It specifically supports multiple clients, separate permissions, campaign organization, reporting, and duplicating high-performing pages across client accounts. unbounce.com

Unbounce

My quick recommendation:

• "I run a marketing agency and want everything under one roof" → HighLevel
• "I build/optimize landing pages for lots of clients" → Unbounce
• "I run sophisticated inbound/CRM marketing for larger clients" → HubSpot

If you tell me what your agency actually does (paid ads, lead gen, landing pages, SEO, etc.) and roughly how many clients, I can tell you which one I'd pick.

If you mean an agency platform where you can manage landing pages, funnels, campaigns, leads, automation, and multiple clients from one login, the big one is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're thinking of if you've seen agencies running dozens of client accounts under one platform. It has client subaccounts plus websites/funnels, CRM, calendars, workflows, messaging, and reporting in the same ecosystem. HighLevel explicitly positions itself around managing clients' leads, websites, funnels, calendars, and other services from one platform. www.gohighlevel.com

HighLevel official site

If your main thing is building lots of high-converting landing pages for different clients, rather than running the entire CRM/marketing operation, Unbounce may actually be the better fit. It lets agencies separate clients, permissions, domains and campaigns within one account and copy successful pages between clients. unbounce.com

Unbounce for agencies

My quick recommendation:

• Want an agency operating system → HighLevel
• Want a landing-page/campaign production system → Unbounce
• Want enterprise CRM + marketing → HubSpot
• Want white-label reporting/fulfillment → DashClicks

If you tell me what your agency actually does (e.g. Meta ads → landing page → lead → appointment), I can tell you which one I'd pick and why.

If you mean an agency platform where you can manage many clients, each with their own landing pages, funnels, campaigns, leads, automations, and reporting, the big one to look at is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're thinking of if you've seen agencies running dozens of clients from one dashboard. Its structure is essentially:

Agency account → Client sub-accounts → Landing pages/funnels + CRM + campaigns + automations + reporting

That makes it particularly useful if you're building and managing lead-generation systems for multiple businesses, rather than simply designing landing pages. www.gohighlevel.com

Unbounce is the better choice if your primary job is landing pages and conversion optimization. It explicitly supports multiple client accounts, permissions, campaign organization, cross-client duplication, A/B testing, and reporting. unbounce.com

If you tell me what kind of agency you're running (PPC, lead gen, web design, SEO, etc.) and roughly how many clients, I can tell you which platform I'd pick and why.

If you mean an agency platform where you can manage many clients, each with their own landing pages, funnels, leads, automations, and campaigns from one login, the big one is HighLevel (GoHighLevel).

The main options

HighLevel is probably what you're looking for if the goal is an agency "command center." It uses separate client sub-accounts, while the agency can manage users and access across those accounts. It also combines funnels/landing pages with CRM, workflows, conversations, pipelines, and campaign automation. help.gohighlevel.com

Unbounce is the better choice if your primary product is building and optimizing landing pages for lots of clients. It specifically supports multiple client environments, permissions, campaign management, A/B testing, and copying high-performing assets between clients. unbounce.com

My quick recommendation

• Lead-gen / ads agency → HighLevel
• Landing-page / CRO agency → Unbounce
• Full marketing + sales + enterprise clients → HubSpot
• Website-building agency → Duda

If you tell me what you're actually selling clients (e.g. Meta/Google ads + landing pages + lead follow-up), I can tell you which platform I'd pick and how I'd structure the client accounts.

If you mean “one login where an agency can manage landing pages, funnels, ads, leads, automations, and multiple clients”, the most common answer is HighLevel (GoHighLevel).

Best options

\*Webflow is excellent for building/managing the pages themselves, but isn't an all-in-one ad/campaign management system.

HighLevel is probably what you're looking for. It has separate client sub-accounts, landing pages/funnels, CRM, automations, and an Ad Manager that can manage Meta, Google, and LinkedIn campaigns from one dashboard. help.gohighlevel.com

HighLevel

If your actual goal is “I want to build 50–100 landing pages for different clients and run paid traffic to them from one agency dashboard,” I can narrow this down to the 3 platforms that are best specifically for that workflow.

Agencies usually use marketing automation platforms, landing page builders, and client management suites that let them run multiple brands, campaigns, and client accounts from one dashboard. The best fit depends on whether you’re a marketing agency, paid ads agency, funnel agency, or web design shop.

Here are the most common platforms:

For a typical lead-generation agency managing dozens of clients, the most common choice today is HighLevel because it combines:

• Client accounts/subaccounts
• Landing pages and funnels
• CRM pipelines
• Forms and lead capture
• Email/SMS automation
• Appointment booking
• Ad tracking
• Reputation management
• Reporting dashboards
• White-label client login

For a paid ads agency running Meta/Google campaigns and needing lots of landing page variants, agencies often pair:

• Unbounce or Instapage → landing pages
• HubSpot or HighLevel → CRM + automation
• Google/Meta ad platforms → traffic

For a web design agency, the stack is often:

• Webflow/WordPress → websites
• HubSpot/HighLevel → marketing operations
• Agency project management tools → client communication

If your goal is specifically “50+ clients, each with multiple landing pages and campaigns, managed from one login”, HighLevel is probably the category leader, while HubSpot is stronger for enterprise clients.

If you mean “one dashboard where an agency can manage landing pages, funnels, leads, automations, and campaigns for many different clients,” the most common answer is HighLevel (GoHighLevel).

The main options

HighLevel is particularly agency-oriented: you create a separate sub-account for each client, while managing them from your agency account. It combines landing pages/funnels, CRM, email/SMS campaigns, workflows, pipelines, calendars, and reporting. www.gohighlevel.com

If your agency is specifically running Meta/Google ads → landing page → lead capture → CRM → automated follow-up, I'd also look closely at Scalabl, which is designed around managing campaigns across multiple clients, domains, and ad accounts. www.scalabl.io

If you tell me what you're trying to build (e.g. 10 clients, each with 5–20 landing pages and their own Google/Meta campaigns), I can tell you which platform I'd choose and why.