The essential platforms for running A/B tests, managing feature flags, and building a culture of experimentation. From visual editors to warehouse-native analysis, find the right tool for your team's testing needs.
The world's leading experimentation platform
Optimizely is an enterprise-grade experimentation platform that enables teams to run A/B tests, multivariate tests, and feature experiments at scale. With a visual editor, powerful targeting, and robust statistical engine, it's trusted by Fortune 500 companies for experimentation across web, mobile, and full-stack applications.
Enterprise teams running sophisticated experiments across multiple platforms with complex targeting needs
Custom enterprise pricing
Experience optimization platform for growth
VWO (Visual Website Optimizer) is an all-in-one conversion optimization platform that combines A/B testing, split URL testing, multivariate testing, personalization, and behavioral analysis. With an intuitive visual editor and built-in heatmaps, it's designed for marketers and product teams to optimize user experiences without developer dependency.
Marketing and product teams who want an all-in-one CRO platform with built-in analytics and no-code capabilities
From $348/month, free plan available
Feature management platform for modern software teams
LaunchDarkly is the leading feature management platform that decouples deployment from release. It enables teams to control feature rollouts, run experiments, and manage feature flags at scale. Built for engineering teams, it supports progressive delivery, targeted rollouts, and sophisticated experimentation with minimal performance overhead.
Engineering teams practicing continuous delivery and progressive rollouts with feature flag management
From $8.33/seat/month, free plan available
Feature delivery platform with built-in experimentation
Split is a feature delivery platform that combines feature flags, experimentation, and impact measurement in one unified system. It automatically measures the impact of every feature release on key metrics, enabling data-driven decisions about what to build, release, and rollback. Trusted by engineering-led organizations for continuous delivery.
Engineering-led teams who want to measure the impact of every feature release with built-in experimentation
Custom pricing, free developer plan available
Modern experimentation platform for product teams
Statsig is a modern product experimentation platform built by ex-Facebook engineers who created the experimentation infrastructure that powers Meta. It offers feature gates, A/B testing, dynamic configs, and automated analysis with cutting-edge statistical methods. Designed for speed and scale with generous free tier.
Fast-growing product teams who need cutting-edge statistics, speed, and a generous free tier
Free up to 1M events/month, then from $200/month
Open-source feature flagging and A/B testing
GrowthBook is an open-source feature flagging and experimentation platform that runs on your existing data infrastructure. It analyzes experiment results using your warehouse data (BigQuery, Snowflake, Redshift) with Bayesian statistics. Self-hostable or cloud-hosted, it gives you full control over your experimentation data.
Teams who want full control over their experimentation data, prefer open-source solutions, or have strict data privacy requirements
Free self-hosted, cloud from $20/month
AI-powered experimentation & personalization
AB Tasty is a comprehensive experimentation and personalization platform that combines A/B testing, multivariate testing, split testing, and AI-powered personalization. With a focus on user experience optimization, it offers advanced targeting, audience builder, and integrations with major marketing and analytics platforms.
E-commerce and digital experience teams who need both experimentation and AI-powered personalization
Custom enterprise pricing
AI-driven A/B testing and personalization
Kameleoon is a unified experimentation and personalization platform that uses AI to predict winning variations and optimize experiences in real-time. With full-stack capabilities, advanced statistical methods, and predictive targeting, it's designed for data-driven teams who want to accelerate experimentation velocity.
Enterprise teams who want AI-driven experimentation with predictive analytics to accelerate learning
Custom enterprise pricing
Open-source feature toggle system
Unleash is an enterprise-ready, open-source feature management platform that provides feature toggles as a service. Built with developer experience in mind, it offers gradual rollouts, A/B testing capabilities, kill switches, and operational flags. Self-host or use their managed cloud with full control over your feature flag infrastructure.
Engineering teams who want open-source feature management with enterprise features and experimentation capabilities
Free self-hosted, cloud from €80/month
Free A/B testing integrated with Google Analytics
Google Optimize (sunset September 2023) was Google's free A/B testing and personalization tool deeply integrated with Google Analytics. While no longer accepting new users, many teams still use it. Google recommends migrating to third-party platforms or Google Analytics 4's native experimentation features for basic tests.
Legacy teams still using the platform before migration; new teams should consider alternatives
Free (no longer available for new users)
Choose tools with visual editors, built-in analytics, and no-code capabilities:
Choose feature management platforms with SDKs and progressive delivery:
Choose platforms that balance ease-of-use with advanced statistics:
Choose open-source or warehouse-native solutions for data control:
Follow our comprehensive A/B Testing flow to run your first experiment from hypothesis to decision.
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