#feature-flags

Type-safe multi-language configuration management — schema validation, three-tier config (public, secrets, feature flags), and runtime clients for TypeScript, Python, Rust, and Go.

Unleash Toolbar for frictionless local development

Unleash client SDK for PHP

Unleash client SDK for Rust language projects

Server Side Events client and server for Go

An OpenFeature provider for the LaunchDarkly Ruby server SDK.

Server-sent events (SSE) client implementation for Rust

LaunchDarkly Server-side AI SDK for Go

Redis integration for the LaunchDarkly SDK for Server-side Go (with Redigo client)

An OctopusDeploy dotnet OpenFeature provider

Unleash client SDK for Ruby

:zap: GrowthBook Proxy Server - Caching, Streaming, Security, and Scalability

Redis integration for the LaunchDarkly SDK for Server-side PHP using predis

DevCycle - .NET Server SDK

DevCycle - PHP Server SDK

Go SDK for dynamic runtime configuration — sync values from etcd, Redis, HashiCorp Vault, MySQL, or PostgreSQL with zero polling logic for your application.

Public repo for the Braze React Native SDK

A feature flipper for Django

An OpenFeature provider for the LaunchDarkly dotnet server SDK.

Local OpenFeature provider with JSON/YAML snapshot validation, environment overrides, and redacted audit logs.

Override your Unleash feature flags blazing fast

ConfigCat SDK for Rust. 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.

Official GrowthBook SDK for Rust Apps- Open Source Feature Flagging and A/B Testing Platform

Production intelligence layer for feature flags at scale — blast radius gating, circuit-breaker auto-rollback, Merkle-linked audit log, incident correlation, and Knight Capital–style tombstoning. Go + Python + TypeScript polyglot monorepo.

Feature flags as a Convex component — variants, targeting, percentage rollouts, and per-subject overrides, evaluated on the backend and streamed live to clients.

Official Zenmanage feature flags SDK for PHP

Official FeatureHub Javascript, Typescript, React, SolidJS, Node SDKs

Official GrowthBook MCP server for creating flags, getting experiments, and more.

Redux SDK client for Split Software

[JS] Switcher Client - JavaScript SDK to work with Switcher API - Cloud-based Feature Flag