Lightweight open-source feature flag system with a relay proxy, OpenFeature support, file/cloud retrievers, and exporters for usage data.

2.1k stars215 forksMITlast commit Actively maintained
Featurevisor is a feature flag and experimentation platform for managing feature rollouts, targeting, remote configuration and A/B tests. It uses a Git-based workflow to build static JSON datafiles served via CDN and provides client SDKs and analytics for evaluation.
Lightweight open-source feature flag system with a relay proxy, OpenFeature support, file/cloud retrievers, and exporters for usage data.

2.1k stars215 forksMITlast commit Actively maintained
Open-source, self-hosted feature flag management platform with progressive rollouts, targeting rules, A/B testing, audit logs, and APIs for automated releases.

1.9k stars145 forksMITlast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in API Development, Mocking & Testing.