GrowthBook

GrowthBook is an open-source feature flagging and A/B testing platform designed to help companies release features safely and measure their impact with confidence. Think of it as your complete experimentation toolkit that works with your existing data setup.

The platform combines two essential capabilities: feature flags that let you control who sees new features and when, and A/B testing tools that help you understand which changes actually improve your product. What makes GrowthBook special is its warehouse-native approach - it connects directly to your data sources like BigQuery, Snowflake, or Google Analytics instead of requiring you to send data elsewhere.

Founded in 2021, GrowthBook has grown rapidly and now powers experiments at thousands of companies. You can use it as a hosted cloud service or install it on your own servers for complete control and privacy.

• Open-source feature flagging and A/B testing platform

• Works with existing data warehouse and analytics tools

• Lightweight SDKs for multiple programming languages

• Visual editor for no-code website experiments

• Advanced statistics (Bayesian, Frequentist, CUPED)

• Real-time feature flag updates and targeting

• Enterprise security and compliance features

• Self-hosted or cloud deployment options

• Unlimited experiments and traffic

• Community support and documentation