Best CRO Tools for Agencies in 2026

The short answer: The best CRO tools for agencies in 2026 are Humblytics for affordable, fast, cookie-free testing scored in revenue across many client sites; Convert.com for privacy-conscious agency work with predictable per-account pricing; and VWO for mid-market client programs that need deep targeting. Microsoft Clarity is the best free option for heatmaps and replays, and Optimizely or AB Tasty fit enterprise clients with the budget to match.

Agencies run CRO differently than in-house teams. You manage many client sites at once, you bill for outcomes, you report to people who did not run the test, and you need tools that install fast and price sanely as you add accounts. A platform that works for one big brand can sink an agency the moment you multiply the seat cost by 15 clients.

This guide ranks nine CRO tools for agency use in 2026. Every price below was verified against the vendor's live pricing or current procurement data. Where a vendor hides numbers behind a sales call, we say so.

What are the best CRO tools for agencies in 2026?

Here is the at-a-glance comparison. Humblytics is listed first because it is the best-value pick for agencies running testing across many client sites, not because the list is ranked by quality alone.

Tool	Best for (agency context)	Key CRO features	Cookie-free	Starting price
Humblytics	Affordable, revenue-scored testing across many client sites	Analytics, no-code A/B testing, heatmaps, funnels, Stripe-verified revenue attribution	Yes	$19/mo
Convert.com	Privacy-conscious agencies wanting flat per-account pricing	A/B, MVT, multipage testing, advanced goals	Cookieless option	$299/mo (annual)
VWO	Mid-market client programs needing deep targeting	A/B, MVT, multivariate, heatmaps, personalization (add-on)	Consent-dependent	~$314/mo (annual)
Optimizely	Enterprise clients with large budgets	Web + feature experimentation, personalization	Consent-dependent	Custom (~$36k/yr+)
AB Tasty	Enterprise retail and e-commerce clients	Experimentation, personalization, feature flags	Consent-dependent	Custom (~$40k/yr+)
Hotjar (Contentsquare)	Qualitative research on client UX	Heatmaps, session replay, surveys, funnels	Consent-dependent	Free; paid ~$39/mo
Microsoft Clarity	Free heatmaps and replays for every client	Heatmaps, session recordings, AI insights	Cookieless	Free
Unbounce	Agencies that build and test landing pages	Landing page builder, A/B testing, AI traffic optimization	Consent-dependent	$74/mo; A/B from $112/mo
Plerdy	Budget UX, SEO, and CRO in one tool	Heatmaps, replays, SEO audit, popups, A/B	Consent-dependent	Free; paid from $21/mo

What should an agency look for in a CRO tool?

Five things decide whether a CRO tool earns its place in an agency stack.

Pricing that scales by client, not by surprise. Many CRO tools price on monthly tracked users or sessions. Add a few high-traffic clients and the bill jumps without warning. Flat or predictable per-account pricing protects your margin.

Fast setup across many sites. You will install the script dozens of times. A single lightweight snippet that works on Webflow, Framer, Shopify, and WordPress beats a tool that needs a developer for every deployment.

Client-ready reporting. Your client did not watch the test run. They need a clean report or a shareable link that shows what changed and what it earned.

Privacy and compliance. If you serve EU clients, cookie consent banners and GDPR exposure are your problem to manage. Cookie-free tools cut that risk for every client at once.

Outcome you can bill on. A lift in click-through rate does not pay invoices. A lift in revenue does. Tools that tie tests to dollars let you justify your retainer.

How we picked

We scored each tool on the five criteria above, weighted for agency reality: pricing model, multi-client management, reporting, privacy, and proof of outcome. We pulled current pricing from each vendor's live page and from 2026 procurement data, and we noted the January 2026 merger of VWO and AB Tasty under Everstone Capital, which affects two tools on this list. We did not rank by feature count. A tool with 200 features your clients never use is worse than a tool with the five they need.

Humblytics

Humblytics is an all-in-one, cookie-free analytics and conversion platform that scores A/B tests in revenue, built so one lightweight script covers an agency's whole client roster. It combines analytics, no-code A/B testing, heatmaps, funnels, and Stripe-verified revenue attribution in a single script of about 36 KB. For agencies, the pitch is simple: one cheap, fast tool that proves which test actually made a client money.

Best for (agencies): Agencies that want affordable, fast, cookie-free, revenue-scored testing across many client sites without enterprise contracts.

Pricing (2026): Plus $19/mo, Business $79/mo, Scale $279/mo, and Enterprise (custom). Flat plan pricing, not per-tracked-user, so a high-traffic client does not blow up the invoice.

Pros for agencies:

• Flat, affordable pricing that protects margin as you add clients.
• One ~36 KB script installs fast on Webflow, Framer, Shopify, and WordPress.
• Cookie-free and GDPR-friendly, which removes consent-banner risk for EU clients across the board.
• Tests are scored in revenue, not just clicks, through Stripe-verified attribution, so you can report dollar lift to clients.
• Shareable reports and links make client updates quick.
• A 42-endpoint REST API plus agent skills (MCP) let you point Claude or Codex at a client funnel and run analysis or ship tests programmatically.

Cons and limits: Humblytics does not currently offer white-label dashboards or per-client logins, so you cannot rebrand it as your own product or give each client an isolated seat today. It also has no session replay, so pair it with a free tool like Microsoft Clarity if a client needs to watch individual sessions.

Who should use it: Performance and growth agencies running testing across many small-to-mid client sites who want cheap setup, EU compliance by default, and revenue as the scoreboard. See the Humblytics agencies page for the agency setup, and the A/B testing and revenue attribution pages for how scoring works.

Convert.com

Convert.com (Convert Experiences) is a privacy-first experimentation platform that has long been the classic pick for CRO agencies that handle data-sensitive clients. It runs A/B, split URL, multivariate, and multipage tests with a strong record on consent and data handling.

Best for (agencies): Privacy-conscious agencies wanting predictable per-account pricing and a tool clients trust on data.

Pricing (2026): Growth starts at $299/mo billed annually ($399/mo monthly) for 100,000 tested users; Pro is $420/mo billed annually ($599/mo monthly); Enterprise is price on request. Pricing is by tested users, not feature-gated, so all plans get the core testing features.

Pros for agencies:

• Reputation as the agency and privacy pick, which helps in client pitches.
• No feature gating between plans, so a Growth client still gets multivariate and multipage testing.
• Cookieless tracking options and a clear stance on GDPR and CCPA.
• Many integrations and a partner program built for agencies.

Cons and limits: Pricing climbs with tested users, so a few high-traffic clients raise the bill. There is no built-in landing page builder, and revenue reporting depends on your own analytics integration rather than verified attribution out of the box.

Who should use it: Established CRO agencies whose clients care about data privacy and who want a dedicated experimentation tool with predictable annual pricing.

VWO

VWO is a mature experimentation and optimization platform that sells testing, insights, personalization, and rollouts as separate modules. In January 2026, VWO merged with AB Tasty under Everstone Capital, so expect the two roadmaps to converge over time.

Best for (agencies): Mid-market client programs that need deep targeting, multivariate testing, and a modular toolset.

Pricing (2026): The Testing module starts at roughly $314/mo billed annually for low traffic, and rises with monthly tracked users. In-app checkout shows the Growth tier around $665/mo at 100,000 tracked users and Pro near $1,336/mo at the same volume. Enterprise is custom, starting around $1,265/mo. A free Starter tier exists for under 50,000 tracked users but is being phased out in many regions.

Pros for agencies:

• Strong visual editor and advanced targeting and segmentation.
• Heatmaps and session recordings available through the Insights module.
• Modular pricing lets you buy only testing if that is all a client needs.

Cons and limits: Pricing is based on monthly tracked users and is mostly quote-driven, which creates budget uncertainty across a client roster. Modules are priced separately, so a full stack adds up. The AB Tasty merger adds some roadmap uncertainty.

Who should use it: Agencies running serious experimentation programs for mid-market clients who can absorb tracked-user pricing.

Optimizely

Optimizely is an enterprise experimentation and digital experience platform aimed at large organizations running sophisticated testing and personalization. It is powerful and expensive, and it does not publish prices.

Best for (agencies): Enterprise clients with large budgets and dedicated optimization teams.

Pricing (2026): Custom only, with no monthly billing. Web Experimentation alone is estimated to start around $36,000 per year, mid-market deployments commonly land between $65,000 and $120,000 per year, and full multi-product enterprise bundles can exceed $200,000 per year. Implementation and services often add 35 to 50 percent on top of license cost.

Pros for agencies:

• Deep experimentation, including server-side and feature experimentation.
• Strong statistics engine and personalization.
• Fits when a client is already on the Optimizely digital experience stack.

Cons and limits: The price puts it out of reach for most agency client work outside large enterprise accounts. Annual contracts only, no self-serve, and a sales call before you see a number.

Who should use it: Agencies servicing enterprise clients who already budget six figures for experimentation.

AB Tasty

AB Tasty is an enterprise experimentation and personalization platform with a strong footprint in retail and e-commerce. As of January 2026 it merged with VWO under Everstone Capital.

Best for (agencies): Enterprise retail and e-commerce clients that want experimentation plus personalization and feature management in one bundle.

Pricing (2026): Custom only, with no public tiers and no free plan. Procurement data puts contracts in the $40,000 to $150,000 per year range, with an average around $45,000 per year. Pricing scales with traffic, team size, and modules.

Pros for agencies:

• Bundled experimentation, personalization, and feature flags.
• Polished editor and AI-assisted features for retail use cases.
• Good support and onboarding for large accounts.

Cons and limits: No published pricing, no free trial in the self-serve sense, and a sales process for every deal. Too costly for small or mid client work. The VWO merger adds roadmap uncertainty.

Who should use it: Agencies with enterprise retail clients running 15 or more tests a month who value personalization and can fund a five-figure annual contract.

Hotjar (Contentsquare)

Hotjar, now Hotjar by Contentsquare, is a behavior analytics tool for the qualitative side of CRO: heatmaps, session recordings, surveys, and funnels. It tells you why users behave the way they do, which complements a dedicated testing tool.

Best for (agencies): Qualitative research on client UX to generate test hypotheses.

Pricing (2026): A free plan covers up to 200,000 monthly sessions with heatmaps, session replay, and basic funnels. The Growth plan starts around $39 to $49/mo billed annually for 7,000 sessions and scales with session volume. Surveys are now a separate Voice of Customer product starting around $99/mo. Pro and Enterprise are custom.

Pros for agencies:

• Generous free tier that works for many client sites.
• Unlimited team seats on paid plans, useful for agency teams.
• Strong heatmaps and replays to find friction before you test.

Cons and limits: It is not a testing tool, so you still need an A/B platform. Session-volume pricing escalates quickly on higher-traffic clients, and surveys now cost extra. It is consent-dependent for tracking, so EU clients still need banners.

Who should use it: Agencies that want a research layer to inform tests, paired with a separate experimentation tool.

Microsoft Clarity

Microsoft Clarity is a completely free behavior analytics tool offering heatmaps, session recordings, and AI insights with no traffic limits. It is the easiest free addition to any agency stack.

Best for (agencies): Free heatmaps and session replays on every client site, at any scale.

Pricing (2026): Free forever. No paid tier, no session caps, no traffic limits.

Pros for agencies:

• Genuinely free at any traffic level, so you can deploy it on every client.
• Unlimited heatmaps, recordings, sites, and team members.
• Smart events flag rage clicks and dead clicks automatically.
• Copilot AI summarizes sessions and heatmaps in plain language.
• Cookieless and GDPR and CCPA ready.

Cons and limits: It is not a testing tool, and it has no revenue attribution. Data retention is 30 days, so you cannot compare long historical trends. Reporting is functional rather than client-polished.

Who should use it: Every agency. There is no reason not to run Clarity for free alongside your testing and analytics tools.

Unbounce

Unbounce is a landing page builder with built-in A/B testing and AI traffic optimization. For agencies, its value is building and testing campaign landing pages fast, not testing existing client sites.

Best for (agencies): Agencies that build and test dedicated landing pages for paid campaigns.

Pricing (2026): Build starts at $74/mo billed annually ($99 monthly). A/B testing requires the Experiment plan at $112/mo billed annually ($149 monthly) for up to 30,000 visitors. Optimize is $187/mo billed annually ($249 monthly), and the Agency plan starts around $649/mo with multi-client management and unlimited sub-accounts.

Pros for agencies:

• Fast drag-and-drop page building for campaigns.
• A dedicated Agency plan with client sub-accounts.
• AI traffic optimization (Smart Traffic) routes visitors to the best variant.

Cons and limits: A/B testing is gated behind the Experiment plan and up, so the cheapest tier cannot test. It tests pages you build in Unbounce, not your clients' existing sites. Visitor limits can pinch when a campaign performs.

Who should use it: Paid-media and lead-gen agencies that need to spin up and test campaign landing pages quickly.

Plerdy

Plerdy is a budget all-in-one tool that bundles heatmaps, session replay, an SEO audit, popups, conversion tracking, and basic A/B testing. It trades depth for breadth at a low price.

Best for (agencies): Budget-minded agencies that want UX, SEO, and light CRO in one cheap tool.

Pricing (2026): A free tier covers limited daily pageviews. Paid plans start at $21/mo billed annually (Startup, $32 monthly), with Scale at $42/mo annually ($64 monthly) and higher Enterprise tiers up to about $253/mo. A/B testing is included on all plans.

Pros for agencies:

• Very low entry price with several tools bundled together.
• SEO audit and monitoring set it apart from behavior-only tools.
• Free tier and Chrome extensions for quick audits.

Cons and limits: Each capability is shallower than a specialist tool. Replay search and analytics depth lag behind dedicated platforms. Daily pageview caps can constrain higher-traffic client sites.

Who should use it: Small agencies and freelancers who want a single cheap tool covering UX, SEO, and basic testing rather than a best-in-class stack.

How to choose a CRO tool for your agency

Match the tool to how your agency actually operates.

Multi-client management. If you run many client sites, favor flat plan pricing and a single script you can deploy everywhere. Humblytics, Microsoft Clarity, and Plerdy fit this. Tools priced on tracked users or sessions, like VWO and Hotjar, get expensive as you add high-traffic clients. Unbounce offers a dedicated Agency plan with sub-accounts if landing pages are your focus.

Reporting. Your client needs to see what changed and what it earned. Tools with shareable reports and links cut your reporting time. If the client cares about dollars, pick a tool that scores tests in revenue rather than one that only reports clicks and conversion rate.

Pricing model. Decide whether you can pass tool costs to clients or absorb them in a retainer. Flat per-plan pricing is predictable. Tracked-user and session pricing is not, and a single viral client page can spike your bill. Enterprise tools like Optimizely and AB Tasty only make sense when a single client funds the contract.

Privacy and compliance. If you serve EU clients, cookie consent is your liability. Cookie-free tools like Humblytics, Microsoft Clarity, and Convert.com's cookieless option remove banner friction across your whole roster at once. Consent-dependent tools push that work back onto every client site.

Speed of setup. You will install the script many times. A single lightweight snippet that works on Webflow, Framer, Shopify, and WordPress beats a tool that needs developer time per deployment. The lighter the script, the less it hurts client page speed and Core Web Vitals.

Frequently asked questions

What is the cheapest CRO tool for agencies?

Microsoft Clarity is the cheapest because it is free at any traffic level for heatmaps and session recordings, though it does not run tests. For paid testing, Humblytics starts at $19/mo on flat plan pricing, and Plerdy starts at $21/mo billed annually. Both stay affordable across many clients because they do not price on tracked users.

What is the best free CRO tool for agencies?

Microsoft Clarity is the best free CRO tool. It gives you unlimited heatmaps, session recordings, AI insights, sites, and team seats with no traffic caps, and it is cookieless. It is not a testing tool, so pair it with an A/B platform. Hotjar's free tier (up to 200,000 monthly sessions) and Plerdy's free tier are useful backups.

Which CRO tools are white-label for agencies?

Be honest with yourself here: true white-label CRO, where you rebrand the dashboard and give each client an isolated login, is rare and usually sits in enterprise tiers. Humblytics does not currently offer white-label dashboards or per-client logins, though it does support shareable reports and links you can send to clients. If full white-label is a hard requirement, confirm it in writing with any vendor before you sign, because marketing pages often imply more than the product ships.

Do clients need consent banners with these CRO tools?

It depends on the tool. Cookie-free tools like Humblytics, Microsoft Clarity, and Convert.com's cookieless option reduce or remove the need for consent banners under GDPR, which is a real advantage when you manage many EU client sites. Consent-dependent tools that set tracking cookies, like Optimizely, AB Tasty, and standard Hotjar setups, generally require a consent banner and proper configuration on each client site.

Which CRO tools show revenue, not just clicks?

Humblytics scores A/B tests in revenue through Stripe-verified attribution, so you can report dollar lift rather than click lift. VWO and Optimizely can track revenue goals when you wire up the integration, and Hotjar's higher tiers offer revenue-attributed heatmaps. For agencies that bill on outcomes, a tool that proves revenue impact out of the box makes the retainer easier to justify. See how Humblytics handles revenue attribution and A/B testing, or read the agencies overview.