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growthbook / growthbook

Open Source Feature Flags, Experimentation, and Product Analytics

Updated Sep 13, 2026
TypeScript

Flagsmith / flagsmith

Flagsmith is an open-source feature flag platform with remote config, experimentation, and self-hosted or cloud deployment options.

react python docker remote-control continuous-integration ci cd feature-flags feature-toggles self-hosted hacktoberfest feature-flaggers multivariate-testing remote-config feature-flag feature-flagging feature-management flagsmith

Updated Sep 12, 2026
Python

flippercloud / flipper

Sponsor

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🐬 Beautiful, performant feature flags for Ruby.

mysql ruby rails api redis http flipper postgres mongo dalli memcached feature-flags feature-toggles features rollout feature feature-toggle feature-flag feature-flagging

Updated Sep 9, 2026
Ruby

FeatureHub - cloud native feature flags, A/B testing and remote configuration service. Real-time streaming feature updates. Provided with Java, JavaScript, React, Python, Go, .Net, Ruby, Android, Swift and Flutter SDKs.

deployment feature-flags feature-toggles cloud-native features feature-toggle split-testing feature-service remote-config feature-flag a-b-testing a-b-test feature-flagging feature-flipping feature-toggling-api feature-toggling feature-toggle-service feature-flags-service

Updated Sep 8, 2026
Dart

andrewdmaclean / awesome-feature-flag-management

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A curated list of awesome resources related to feature flagging & management 🚩

awesome feature-flags awesome-list feature-flagging feature-management

Updated May 26, 2026

Flagsmith / flagsmith-frontend

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Web App and Mobile App for Flagsmith

react react-native continuous-integration continuous-delivery continuous-deployment feature-flags feature-toggles continuous-testing feature-toggle feature-flaggers remote-config feature-flag feature-flagging

Updated Jun 10, 2021

Flagsmith / flagsmith-js-client

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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/

javascript react-native continuous-delivery ci cd continuous-deployment feature-flags feature-toggles feature-toggle feature-flaggers continous-integration remote-config feature-flag feature-flagging

Updated Sep 3, 2026
TypeScript

Flagsmith / flagsmith-docs

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This is the documentation repository for the Docs of Flagsmith. Ship features with confidence using feature flags and remote config. Host yourself or use our hosted version at https://www.flagsmith.com/

documentation continuous-integration continuous-delivery ci cd feature-flags feature-toggles feature-flaggers remote-config continous-deployment feature-flag feature-flagging flagsmith

Updated Apr 21, 2023
JavaScript

Flagsmith / flagsmith-nodejs-client

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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.

nodejs continuous-integration continuous-delivery ci cd continuous-deployment feature-flags feature-flaggers remote-config feature-flag feature-flagging bullet-train

Updated Sep 13, 2026
TypeScript

Flagsmith / flagsmith-java-client

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Java 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/

java sdk continuous-integration ci cd feature-flags feature-toggles feature-flaggers remote-config feature-flag feature-flagging flagsmith

Updated Sep 5, 2026
Java

PabloJoan / feature

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Feature flagging API used for operational rampups and A/B testing

feature-flags feature-toggles toggle ab-testing feature-toggle ab-tests ab-test a-b-testing a-b-test feature-flagging

Updated Dec 3, 2023
PHP

travaux-com / VariantRetriever

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VariantRetriever is a minimalist package for feature flagging

experiment feature-flags variants ab-testing hacktoberfest retriever feature-flagging hacktoberfest-accepted

Updated Jul 27, 2021
PHP

configcat / kotlin-sdk

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ConfigCat SDK for Kotlin Multiplatform. ConfigCat is a hosted feature flag service: https://configcat.com. Manage feature toggles across frontend, backend, mobile, desktop apps. Alternative to LaunchDarkly. Management app + feature flag SDKs.

kotlin feature-flags feature-toggles feature-toggle feature-flag kotlin-multiplatform feature-flagging configcat configcat-sdk

Updated Sep 8, 2026
Kotlin

Flagsmith / flagsmith-php-client

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PHP 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/

continuous-integration ci cd feature-flags feature-toggles feature-toggle feature-flaggers continous-deployment feature-flag feature-flagging

Updated Sep 5, 2026
PHP

configcat / dart-sdk

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ConfigCat SDK for Dart (Flutter). ConfigCat is a hosted feature flag service: https://configcat.com. Manage feature toggles across frontend, backend, mobile, desktop apps. Alternative to LaunchDarkly. Management app + feature flag SDKs.

dart feature-flags feature-toggles flutter feature-toggle feature-flag feature-flagging configcat configcat-sdk

Updated Sep 8, 2026
Dart

flagbase / flagasaurus

Star

🏁 Open-source Feature Management Platform

ab-testing rollout feature-toggle remote-config feature-flag growth-engineering feature-flagging feature-management flagbase

Updated Mar 16, 2024
HTML

Flagsmith / flagsmith-ruby-client

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Ruby 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/