Open Source Feature Flags, Experimentation, and Product Analytics

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• Updated Nov 12, 2026
• TypeScript

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

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• Updated Nov 12, 2026
• Python

🐬 Beautiful, performant feature flags for Ruby.

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• Updated Nov 11, 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.

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• Updated Nov 12, 2026
• Dart

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

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• Updated May 26, 2026

Web App and Mobile App for Flagsmith

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• Updated Jun 10, 2021

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 Nov 11, 2026
• TypeScript

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/

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• Updated Apr 21, 2023
• JavaScript

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 Nov 11, 2026
• TypeScript

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 Nov 11, 2026
• Java

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

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• Updated Dec 3, 2023
• PHP

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.

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• Updated Nov 11, 2026
• Kotlin

VariantRetriever is a minimalist package for feature flagging

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• Updated Sep 29, 2026
• PHP

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 Nov 12, 2026
• PHP

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 Nov 9, 2026
• Dart

🏁 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

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/

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• Updated Nov 12, 2026
• Ruby

ci cd feature-flags feature-toggles flutter traits features feature-toggle feature-flaggers continous-integration remote-config continous-deployment feature-flag continous-delivery feature-flagging

• Updated Mar 27, 2021
• Dart

Easy and fast feature flags based on the latest Redis versions

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• Updated Oct 28, 2023
• Ruby

🚩 Use GO Feature Flag with OpenFeature in your iOS / macOS / tvOS apps. 📱💻

provider feature-flags feature-flag feature-flagging openfeature go-feature-flag

• Updated Oct 23, 2026
• Swift