growthbook

Open Source Feature Flags, Experimentation, and Product Analytics

Create a free [GrowthBook Cloud](https://app.growthbook.io) account to get started quickly. Or run it yourself with: ```sh git clone https://github.com/growthbook/growthbook.git cd growthbook docker compose up -d ``` Then visit http://localhost:3000. View the full [Self-Hosting Instructions](https://docs.growthbook.io/self-host) for more details. This pulls our prebuilt public Docker image and needs no registry credentials. If you instead build the image from the `Dockerfile` in this repo, its hardened base images come from Docker's `dhi.io` registry, which requires a one-time `docker login dhi.io` with any free Docker account — see [Building from source](https://docs.growthbook.io/self-host#building-from-source). ## Our Philosophy The top 1% of companies spend thousands of hours building their own in-house experimentation, feature flagging, and analytics platforms. The other 99% are left paying for expensive 3rd party SaaS tools or hacking together unmaintained open source libraries. We want to give all companies the flexibility and power of a fully-featured in-house platform without needing to build it themselves. ## Major Features - Feature flags with advanced targeting, gradual rollouts, and experiments - 24 SDKs including [React](https://docs.growthbook.io/lib/react), [Python](https://docs.growthbook.io/lib/python), [Android](https://docs.growthbook.io/lib/kotlin), and [iOS](https://docs.growthbook.io/lib/swift). [View all](https://docs.growthbook.io/lib) - World class experiment stats engine (CUPED, Sequential, Bayesian, Post-Strat, Bandits, SRM checks). - ❄️ Warehouse Native. Query 11 data sources including BigQuery, Snowflake, and Databricks. [View all](https://docs.growthbook.io/app/datasources). - Flexible SQL-backed metric definitions. Simple conversion rates, ratios, quantiles, and more. - Built-in Product Analytics suite to build dashboards and share with your team. - Document everything with screenshots, custom meta fields, and Markdown throughout. - Webhooks and a full REST API for building integrations and custom workflows. - MCP server to create features, start experiments, clean up stale flags, and more. ## Documentation and Support View the [GrowthBook Docs](https://docs.growthbook.io) for info on how to configure and use the platform. Join [our Slack community](https://slack.growthbook.io?ref=readme-support) if you get stuck, want to chat, or are thinking of a new feature. Or email us at [[email protected]](mailto:[email protected]) if Slack isn't your thing. We're here to help - and to make GrowthBook even better! ## Contributors We ❤️ all contributions, big and small! Read [CONTRIBUTING.md](/CONTRIBUTING.md) for how to setup your local development environment. If you want to, you can reach out via [Slack](https://slack.growthbook.io?ref=readme-contributing) or [email](mailto:[email protected]) and we'll set up a pair programming session to get you started. ## License GrowthBook is an Open Core product. The bulk of the code is under the permissive MIT license. There are several directories that are governed under a separate commercial license, the GrowthBook Enterprise License. View the `LICENSE` file in this repository for the full text and details.