OpenFeature

Standardizing Feature Flagging for Everyone

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Overview
Repositories
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README.md

Welcome to the OpenFeature project 👋

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 or in-house solution.

Learn More 📚 · Get Started 🔭 · Contribute 😍 · Discover the Ecosystem 🧭

👋 Getting involved

There is a lot to do! If you're interested in getting involved, please join our Slack channel, the mailing lists, and attend the community meetings. We're a friendly, collaborative group and look forward to working together!

Learn how to get involved in the OpenFeature Contributor Ladder.

🦺 Help keep our community safe, inviting, and inclusive

OpenFeature follows the CNCF Community Code of Conduct. Please abide by this Code of Conduct when interacting with all repositories under the OpenFeature umbrella and when interacting with people.

👾 Reporting Security Incidents

Please be mindful that Security-related issues should be reported through our Security Policy as Security-related issues and vulnerabilities can be exploited and we request confidentiality whenever possible.

OpenFeature is a CNCF incubating project.

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spec spec Public

OpenFeature specification

Python 1.3k 59
community community Public

OpenFeature project community and governance

JavaScript 104 103
openfeature.dev openfeature.dev Public

OpenFeature Website

TypeScript 65 118
playground playground Public

OpenFeature SDK demos and experimentation

TypeScript 77 30
open-feature-operator open-feature-operator Public

A Kubernetes feature flag operator

Go 316 61
flagd flagd Public

A feature flag daemon with a Unix philosophy

Go 999 138

Repositories

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dart-sdk Public
OpenFeature SDKs for Dart server and client applications, including Flutter.

open-feature/dart-sdk's past year of commit activity

Dart 26 Apache-2.0 25 12 5 Updated Sep 24, 2026
spec Public
OpenFeature specification

open-feature/spec's past year of commit activity

Python 1,262 Apache-2.0 59 31 (1 issue needs help) 14 Updated Sep 23, 2026
go-sdk-contrib Public
Community maintained OpenFeature Providers and Hooks for Go

open-feature/go-sdk-contrib's past year of commit activity

Go 83 Apache-2.0 85 28 (2 issues need help) 22 Updated Sep 23, 2026
php-sdk-contrib Public
OpenFeature Providers and Hooks for PHP

open-feature/php-sdk-contrib's past year of commit activity

PHP 17 Apache-2.0 14 16 (1 issue needs help) 12 Updated Sep 23, 2026
swift-sdk Public
Swift implementation of the OpenFeature SDK for iOS clients

open-feature/swift-sdk's past year of commit activity

Swift 31 Apache-2.0 14 18 (4 issues need help) 9 Updated Sep 23, 2026
php-sdk Public
PHP implementation of the OpenFeature SDK

open-feature/php-sdk's past year of commit activity

PHP 43 Apache-2.0 14 15 (1 issue needs help) 7 Updated Sep 23, 2026
rust-sdk-contrib Public
Community maintained OpenFeature Providers and Hooks for Rust

open-feature/rust-sdk-contrib's past year of commit activity

Rust 15 Apache-2.0 18 14 (1 issue needs help) 13 Updated Sep 23, 2026
kotlin-sdk Public
Kotlin implementation of the OpenFeature SDK for Android clients

open-feature/kotlin-sdk's past year of commit activity

Kotlin 27 Apache-2.0 15 17 20 Updated Sep 23, 2026
rust-sdk Public
Rust implementation of the OpenFeature SDK

open-feature/rust-sdk's past year of commit activity

Rust 51 Apache-2.0 13 12 (3 issues need help) 8 Updated Sep 23, 2026
python-sdk-contrib Public
Community contributions for hooks and reference providers in python

open-feature/python-sdk-contrib's past year of commit activity

Python 27 33 26 (4 issues need help) 23 Updated Sep 23, 2026