Open Source Feature Flagging and A/B Testing Platform

Javascript Client for Flagsmith. Ship features with confidence using feature flags and remote config. Host yourself or use our hosted version at https://www.flagsmith.com/

Flagsmith Node JS Client. Flagsmith lets you manage features flags across web, mobile and server side applications. Get builds out faster. Control who has access to new features.

Integrate JSON remote configs to your game or app easily. Open source Javascript SDK for the Joystick, a modern remote configuration platform.

Feature flag management software with support for dynamic rules. Focused on simplicity.

A minimalist feature flagging package for small and proof-of-concept projects.

EdgeFlags is an open-source MVP for Edge-based Feature Flags - built with Next.js, TypeScript, and an admin UI. Includes a control plane, SDK, and demo app, supporting real-time rollouts, A/B testing, and secure API keys.