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The best A/B testing tools to use in 2026

Last updated
Jan 22, 2026
Based on
259 reviews
Products considered
89

A/B testing tools run controlled experiments—split tests—to compare features, paywalls, emails, or UX. They use flags, analytics, and metrics to guide product and growth decisions.

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Intercom
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Top reviewed a/b testing tools

Top reviewed
suits developer-led teams needing self-hosted analytics, session replays, and feature flags to run robust A/B tests across web and backend. emphasizes fast, reliable experimentation with real-time analytics, targeting, and flag-driven rollouts. offers open-source flexibility and guardrails for safe releases, balancing simplicity with customizable experimentation—ideal for teams seeking control without sacrificing speed or clarity.
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