10 Best A/B Testing Tools for Founders [2026 Updated]

1. Optimizely

• Type: Paid
• URL: https://www.optimizely.com
• Overview: Optimizely is an enterprise experimentation platform that enables A/B and multivariate testing across web, mobile, and server-side applications to optimize customer experiences. It combines a visual editor, feature flagging, and a robust results engine to run experiments and roll out winning variations at scale.

2. VWO

• Type: Paid
• URL: https://vwo.com
• Overview: VWO is a conversion optimization suite offering A/B testing, multivariate tests, split URL tests, and a visual editor for marketers to create and run experiments without developer help. It includes targeting, heatmaps, and statistical reporting to measure impact on conversion metrics.

3. AB Tasty

• Type: Paid
• URL: https://www.abtasty.com
• Overview: AB Tasty is a digital experience optimization platform for marketers and product teams that provides A/B/n testing, personalization, and feature rollouts across web and mobile channels. It offers a visual editor and server-side SDKs to run experiments and target audiences with iterative improvements.

4. Adobe Target

• Type: Paid
• URL: https://business.adobe.com/products/target/adobe-target.html
• Overview: Adobe Target is an enterprise testing and personalization solution within Adobe Experience Cloud that supports A/B testing, multivariate testing, and automated personalization using AI. It integrates tightly with Adobe Analytics and other Adobe products to deliver data-driven experience optimization.

5. Convert Experiences

• Type: Paid
• URL: https://www.convert.com
• Overview: Convert Experiences is an experimentation platform focused on privacy-compliant A/B testing and full‑stack/server-side experiments, offering both visual editing and developer-friendly SDKs. It provides Frequentist and Bayesian stats engines, collision prevention, and deep targeting for reliable test results.

6. LaunchDarkly

• Type: Paid
• URL: https://launchdarkly.com
• Overview: LaunchDarkly is a feature management and experimentation platform that uses feature flags to run A/B and multivariate experiments across frontend and backend systems. It enables progressive rollouts, metric tracking, and safe shipping of winning variations directly from engineering workflows.

7. Split

• Type: Paid
• URL: https://www.split.io
• Overview: Split is an experimentation and feature flagging platform that lets product and engineering teams run controlled A/B tests and measure feature impact with integrated analytics. It supports server-side and client-side experiments with robust metric integrations and targeting.

8. Unbounce

• Type: Paid
• URL: https://unbounce.com
• Overview: Unbounce is a landing page builder for marketers that includes built-in A/B testing to compare page variants, optimize conversion funnels, and deploy winning pages quickly. Its drag-and-drop editor and conversion-focused templates make it easy to run tests without developer resources.

9. GrowthBook

• Type: Free
• URL: https://www.growthbook.io
• Overview: GrowthBook is an open-source experimentation and feature-flagging platform that supports A/B testing, full‑stack experiments, and both Bayesian and Frequentist analysis engines. It can be self-hosted or used as a managed service and connects to data warehouses and analytics tools for experiment measurement.

10. Crazy Egg

• Type: Paid
• URL: https://www.crazyegg.com
• Overview: Crazy Egg provides A/B testing tools alongside heatmaps and session recordings to help marketers understand user behavior and validate design changes. Its simple test setup and visual insights make it useful for optimizing pages and increasing conversions.