Feature flag management platforms, articles, and resources.

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• About Feature Management
• Educational Resources
• Fully Open-Source Projects
• Partially Open-Source Projects

Feature Management is a modern software-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.

OpenFeature is an open specification that provides a vendor-agnostic, community-driven API for feature flagging that works with your favorite feature flag management tool.

• "Feature Flag Implementation Series " - Sam Smith documents their journey implementing feature flags.
• "Feature Toggles (aka Feature Flags)" - An overview of feature flagging concepts by Martin Fowler.
• "Feature Toggles - Why and How to Add to Your Software" - A tutorial on how to add feature flags to a project by FreeCodeCamp.

• Bucketeer - Feature management and experimentation Javascript.
• flagr - An open-source feature flagging, A/B testing, and dynamic configuration microservice Go.
• FeatBit - A fast, scalable, and popular open source feature flags management service C#/.NET.
• FeatureVisor - Feature management for developers with GitOps TypeScript.
• Growthbook - An open-source platform to help companies make data-driven product decisions with feature flags and A/B tests TypeScript.

• Go Feature Flag - A simple and lightweight self-hosted feature flag solution Go.
• FlagSmith - An open-source feature flag & remote config Service Python.
• Flipt - An open-source feature management platform Go.
• flagd - A feature flag evaluation engine Go.
• Unleash - A powerful open-source solution for feature management TypeScript.

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

• ABTasty - A customer experience optimization and feature management company.
• Apptimize - Enables teams to run A/B tests, rollout and manage new features, and deliver personalized user experiences.
• 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.
• Flagship - Feature management and feature experimentation platform.
• Hypertune - Type-safe feature flags, A/B testing, analytics and app configuration, with Git-style version control.
• Molasses - A suite of feature flag and A/B testing tools that allows your teams to ship code more often and with fewer incidents.
• Optimizely - An experimentation platform that helps developers build and run A/B tests on websites.
• PostHog - An all-in-one, open source platform for building better products.
• PreFab - Offers features flags, dynamic log levels and remote config as a service.
• Statsig - A software product experimentation tool designed to make A/B testing more useful for more companies.
• Tggl - A platform designed for seamless feature flag management and release orchestration, enabling teams to innovate rapidly and efficiently.

• ConfigCat - A cloud-based service that lets you release features without code deployments.
• DevCycle - A feature flag management platform built for developers.
• LaunchDarkly - A feature management platform that allows software development teams to deliver to their customers.
• Split - A feature delivery platform that powers feature flag management, software experimentation, and continuous delivery.
• 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.

• Flipper - Feature flags and controls for Ruby apps and their client-side code.