Flipt

Flipt provides a self‑hosted, open‑source platform for managing feature flags as code. It stores flag definitions directly in Git repositories, allowing developers to use existing branching, merging, and pull‑request workflows to test and promote flag changes. The system supports multiple environments mapped to branches, directories, or separate repositories, and offers a web UI that automatically creates Git commits for each change.

The tool is designed for teams that want to integrate feature‑flag management into their GitOps pipelines without adding external databases or services. Real‑time flag propagation is achieved through a Server‑Sent Events streaming API, and the UI includes dark mode and full Git integration. Enterprise‑level controls such as secret management, GPG‑signed commits, audit trails, and OIDC/JWT/OAuth authentication are available, with additional Pro‑only features for merge proposals and enhanced security.

Flipt can be deployed with a single binary and runs on any infrastructure the user controls, eliminating reliance on third‑party SaaS providers. Its GPL‑3.0 licence and stable maturity level make it suitable for organizations seeking a free, extensible alternative to commercial feature‑flag services.