Multi-language Management Platforms

• flagr - An open-source feature flagging, A/B testing, and dynamic configuration microservice ` Go`.
• FeatureVisor - Feature management for developers with GitOps `TypeScript`.
• Bucketeer - Feature management and experimentation `Javascript`.
• FeatBit - A fast, scalable, and popular open source feature flags management service `C#/.NET`.
• Go Feature Flag - A simple and lightweight self-hosted feature flag solution `Go`.
• flagd - A feature flag evaluation engine `Go`.

Technology-specific Implementations

• flopflip - Feature management for React apps backed by flag provider of your choice `TypeScript`.
• FunWithFlags - feature flags for Elixir `Elixir`.
• Laravel Feature Flags - A feature flag option for Laravel `PHP`.
• Laravel Pennant - A simple, lightweight feature flag package for Laravel `PHP`.
• Django Waffle - Feature flipper for Django `Python`.
• FF4J - Feature flags for Java `Java`.
• HappyKit - Feature flags for your Next.js applications `TypeScript`.

Multi-language Management Platforms

• ABTasty - A customer experience optimization and feature management company.
• Eppo - A next gen A/B experimentation platform that enables entrepreneurial culture.
• FeatureHub - A highly scalable cloud native platform serving features in near real time.
• Molasses - A suite of feature flag and A/B testing tools that allows your teams to ship code more often and with fewer incidents.
• PreFab - Offers features flags, dynamic log levels and remote config as a service.
• Tggl - A platform designed for seamless feature flag management and release orchestration, enabling teams to innovate rapidly and efficiently.
• DevCycle - A feature flag management platform built for developers.
• CloudBees - A cloud-based platform that provides end-to-end automated software delivery.
• Harness - A continuous integration and continuous delivery platform for cloud and on-premise projects.
• FeatureHub - A highly scalable cloud native platform serving features in near real time.
• Hypertune - Type-safe feature flags, A/B testing, analytics and app configuration, with Git-style version control.

Technology-specific Implementations

• Flipper - Feature flags and controls for Ruby apps and their client-side code.
• Hypertune - Type-safe feature flags, Optimized for TypeScript, Next.js and Vercel Edge Config.

• Feature Management - development practice that decouples feature release from code deployment and enables quick changes to feature availability on demand. It uses a technique called feature flags (also known as feature toggles and feature switches) to dynamically administer a feature's lifecycle.

About OpenFeature

• OpenFeature - agnostic, community-driven API for feature flagging that works with your favorite feature flag management tool.

About OpenFeature

• "Feature Flag Implementation Series " - [Sam Smith](https://samlearnsazure.blog) documents their journey implementing feature flags.
• "Feature Toggles (aka Feature Flags)" - An overview of feature flagging concepts by [Martin Fowler](https://twitter.com/martinfowler).
• "Feature Toggles - Why and How to Add to Your Software" - A tutorial on how to add feature flags to a project by [FreeCodeCamp](https://www.freecodecamp.org/).
• "Feature Toggles - Why and How to Add to Your Software" - A tutorial on how to add feature flags to a project by [FreeCodeCamp](https://www.freecodecamp.org/).