The #1 Open-Source Feature Flag & Experimentation Platform
Analyze all your data, run unlimited experiments, and understand your product like never before.
Trusted by Thousands of Product Teams
Build Smarter, Ship Faster with GrowthBook
A single, warehouse-native platform makes it easy to release, test, and measure before and after you ship.
Feature Flagging
Launch with confidence. Maintain an uncluttered code base as you scale.
A/B Testing
Manage experiments end-to-end for continuous product improvements.
Built for High Performance Apps and Websites
Designed for speed, our SDKs are half the size of others and run anywhere with no network requests required.
100 billion+
Feature flag lookups per day
2,700+
Companies use GrowthBook
99.9999%
Infastructure uptime
0
Network requests required
Create a Culture of Experimentation
Reduce the cost and complexity of running experiments, so you can test every feature you ship.
Industry-leading Lightweight SDKs
Our JS SDK is 9kb—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.
View Docs
Independently Deploy New Experiments
Product managers can deploy new features, target roll outs, and deploy new A/B tests all from our easy-to-use platform.
Get Started
Manage No-code Website Updates
Our Visual Editor allows you to run A/B tests on your website without requiring engineering support or code changes.
Visual Editor Details
Run Your Experiments in Your Data Warehouse
GrowthBook integrates with your existing data warehouse so you can analyze all your product data in one place. Take full control of your data with total transparency at the lowest cost.
Connect Seamlessly with Any Event Tracker
Built-in support for the most common event trackers makes integration easy and APIs are customizable for your unique data needs.
Why Product Teams Prefer GrowthBook
GrowthBook is the best way to release code and measure its impact on your users with total control.
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.
Secure by Design
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).
Statistics Overview
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.
Lightweight SDKs
Ready to build smarter and ship faster?
Unlimited feature flags & traffic
Unlimited experiments
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