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GrowthBook is an open-source platform for feature flagging and AB testing built to give teams the power of a fully-featured experimentation system without building it entirely from scratch. It supports both self-hosted and cloud-hosted deployment models, giving organizations the flexibility to own their infrastructure or consume it as a managed service. The platform is designed for performance and scale: its SDKs are lightweight, supporting local evaluation to minimize latency, and it integrates deeply with existing data stacks so you can use your warehouse or analytics system as the source of truth. Experimentation in GrowthBook isn’t just toggles; its statistics engine supports advanced techniques like CUPED, Bayesian, and sequential testing, and control group checks so you can confidently measure impact.
Features
- Feature flags with advanced targeting, gradual rollouts, and environment segmentation
- Full AB testing engine with advanced statistical methods (CUPED, Bayesian, sequential)
- Integration with existing data stacks (BigQuery, Redshift, Mixpanel, Google Analytics, etc)
- Drill-down analysis by browser, country, custom user attributes, and other dimensions
- SDKs in multiple languages with lightweight local evaluation for low latency
- REST API, webhooks, and documentation support for full workflow automation and integration
Project Samples
