🦔 PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

Open-source feature management platform

Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.

Open Source Feature Flags, Experimentation, and Product Analytics

Production-grade Turborepo template for Next.js apps.

Flagsmith is an open source feature flagging and remote config service. Self-host or use our hosted version at https://app.flagsmith.com.

Countly is a privacy-first, AI-powered analytics and engagement platform for understanding and optimizing customer journeys across digital applications, from desktop and mobile to IoT and connected environments.

Enterprise-ready, Git native feature management solution

🐬 Beautiful, performant feature flags for Ruby.

Feature flippers.

Flagr is a feature flagging, A/B testing and dynamic configuration microservice

A tool for refactoring code related to feature flag APIs

GO Feature Flag is a simple, complete and lightweight self-hosted cloud native feature flag solution 100% Open Source — built on OpenFeature 🎛️

Enterprise-grade feature flag platform that you can self-host. Get started - free.

FeatureProbe is an open source feature management service. 开源的高效可视化『特性』管理平台，提供特性开关、灰度发布、AB实验全功能。

A feature flipper for Django

OpenFeature specification

Feature Flags/Toggles for Elixir

⛳️ Feature Flags for Next.js

Feature Flags for the Java platform