Free and open first
Best A/B Testing Tools in 2026
A/B testing tools let teams compare variations and assess responses across experiments. Compare test types and audience targeting, then weigh whether a visual editor, feature flags, or server-side testing fits the way you plan to run tests. Mobile SDK availability and supported platforms are relevant comparison points when your work includes mobile experiences. Free-plan availability and paid-from pricing add cost context. The entries include Confidence by Spotify, DevCycle, Firebase Cloud Messaging, and GrowthBook, as well as LaunchDarkly Experimentation. Think about the audiences, platforms, and experiment setups you need to support as you compare the listed capabilities.
- 52 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
Experimently
Free plan Open source AndroidAPIiPhone+5Experimently offers broad experiment and rollout controls for teams prepared to host it themselves.
- 2
GrowthBook
Free plan Open source AndroidAPIExtension+3Choose GrowthBook for warehouse-based experimentation and feature management with a choice of cloud or self-hosted deployment.
- 3
- 4
Apex
Free plan AndroidAPIiPhone+1Choose Apex if your shop is in a DRIP program and needs experimentation across storefront, server-side, or mobile experiences.
- 5
Confidence by Spotify
Free plan AndroidAPIiPhone+1Choose Confidence if your team wants experimentation, feature management, and warehouse-grounded analytics in one platform, with a managed warehouse available from signup.
- 6
DevCycle
Free plan AndroidAPIExtension+5DevCycle combines feature flag management, staged releases, and experimentation with broad SDK coverage. Compare the Free usage limits with Business allowances and overage charges before committing.
- 7
Featureflip
Free plan AndroidAPIiPhone+3Choose Featureflip if you need feature flags and experimentation for web or mobile, with a free plan for a single project.
- 8
ABtesting.ai
Free plan APIWebABtesting.ai is suited to landing-page owners who want automated experiment suggestions and a free first experiment.
- 9
- 10
Harness Feature Management & Experimentation
Free plan AndroidAPIiPhone+5 - 11
LaunchDarkly Experimentation
Free plan AndroidAPIiPhone+1LaunchDarkly Experimentation offers varied experiment types, statistical methods, and warehouse connections.
- 12
Mida
Free plan AndroidAPIiPhone+1Mida combines website testing, editing, and publishing with integration and SDK options.
- 13
Compose
Free plan WebCompose combines web experiment planning, testing, and reporting with pay-as-you-go billing. It may suit teams focused on client-side web tests, but server-side testing is not offered.
- 14
Omniconvert Explore
Free plan AndroidAPIExtension+3Explore combines testing, segmentation, reporting, and integrations for ecommerce experimentation.
- 15
Nativeblocks
Free plan AndroidiPhoneSelf-hostedPick Nativeblocks if your Android or iOS team wants to update native app screens through server-defined frames, with targeting, translations, and offline caching.
- 16
Statsig
Free plan AndroidAPIExtension+3Statsig combines testing, release controls, and product analytics in one platform, with a free Developer plan and Pro at $150 a month.
- 17
Webtrends Optimize
Free plan AndroidAPIiPhone+1Webtrends Optimize covers experimentation, targeting, recommendations, and reporting, with multiple implementation methods.
- 18
Zoho PageSense
Free plan AndroidAPIExtension+2PageSense brings analytics, behavior analysis, and multiple test types into one platform. Review tracked-user and data-retention allowances when choosing a plan.
- 19
Apertio
Free plan WebApertio provides bounded, server-rendered A/B testing for Next.js applications while avoiding client-side script injection.
- 20
Iteratist
Free plan WebIteratist combines visual website editing, multiple experiment types, variant reporting, and AI tools in a web platform.
- 21
Launch Control
Free plan WebLaunch Control combines release controls with A/B testing and reporting in a free web platform. Teams needing named integrations or a stated security certification should note that neither is listed.
- 22
- 23
Nelio A/B Testing
Free plan WebNelio A/B Testing brings a wide range of experiments, behavior maps, and conversion reporting into WordPress.
- 24
Segmently
Free plan APIWebSegmently covers several web testing methods alongside targeting, feature flags, and analytics.
- 25
AB Tasty
Free trial AndroidAPIExtension+4AB Tasty combines experimentation and rollout tools with personalization, feature management, and analytics across web and mobile.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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