Experiment fearlessly, deliver confidently

The #1 Open-Source Feature Flag & Experimentation Platform

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Trusted by thousands of organizations

Easily measure the success of your products while minimizing engineering and data resources.

John Resig

Khan Academy

GrowthBook is so good. One of the only options that's actually able to load fast, be cacheable, support storing data off-site, and handle synchronous rendering on the client.

Pat McGee

Principal Engineer, GoodDog

"GrowthBook checked all my boxes. The fact that it just queries our data warehouse means we can set up much more sophisticated metrics that are based on tables our data team has built with DBT instead of being tied to just querying raw event data."

Alexander Harmsen

CEO & Founder, Global Predictions

"We've been using the product over the last month to run a few dozen tests and have already increased our overall funnel conversion by about 54%!"

Feature Flags & Experiments Together

Seamless integration makes it easy to release, target and measure the impact of product changes from a single platform.

Feature Flagging

Launch with confidence. Maintain an uncluttered code base as you scale.

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A/B Testing

Manage experiments end-to-end for continuous product improvements.

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We work with your data

GrowthBook is warehouse native, and works with your data where it already lives, allowing you to maintain control, increase privacy and security, and avoid vendor lock-in. We're integrated with all major SQL data sources, plus tools like Mixpanel and Google Analytics

... and natively support most event trackers

We have built in support for 15 common sources of data, including Google Analytics, Segment, RudderStack, Amplitude, Snowplow and more. Have a custom event tracker or use one not listed? Don't worry - data sources are fully customizable if you have unique data needs.

GrowthBook serves 100 billion+ feature flag lookups per day

Open Source

Self-host for Ultimate Control and Security

We build GrowthBook in the open on GitHub and release daily. GrowthBook is certified SOC II and GDPR compliant.

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Data science

Enterprise Statistics

GrowthBook's statistics package supports the most advanced techniques from letting you pick your engine (Bayesian, Frequentists, and Sequential) to CUPED to run experiments faster, to multiple metric corrections (Benjamini-Hochberg, Bonferroni) and data quality checks (SRM, etc).

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Performance

Designed for Speed & Optimal User Experience

Our industry-leading lightweight SDKs with local real-time evaluation means superfast load times. Combine with our highly-customizable cacheing for uptime and resiliency.

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Built for Teams

Promote a culture of experimentation across your organization.

Industry-leading Lightweight SDKs

Our JS SDK is 9k—less than half the size of our closest competitors. Dramatically reduce load times with our open source SDKs for JavaScript, Python, Ruby, PHP. Use our intuitive API for other languages.

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Enterprise-class Experimentation

Our robust Bayesian and Frequentist statistic engines, along with our configurable metric library, means you can customize GrowthBook to exactly match your needs.

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