OpenFeature Ecosystem

SDKs, providers, hooks, OFREP APIs, and integrations that work with OpenFeature.

SDKs

• Java SDK (Java, Server)
• Node.js SDK (JavaScript, Server)
• NestJS SDK (NestJS, Server)
• .NET SDK (.NET, Server)
• Go SDK (Go, Server)
• Python SDK (Python, Server)
• PHP SDK (PHP, Server)
• Web SDK (JavaScript, Client)
• React SDK (React, Client)
• Kotlin SDK (Kotlin, Client)
• iOS SDK (Swift, Client)
• Ruby SDK (Ruby, Server)
• Angular SDK (Angular, Client)
• Dart SDK (Dart, Server)
• Dart SDK (Dart, Client)
• Rust SDK (Rust, Server)
• C++ SDK (C++, Server)
• Flags SDK (Next.js, Client)
• Flags SDK (SvelteKit, Client)

Providers

AB Tasty

• AB Tasty JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• AB Tasty JavaScript Web Provider (JavaScript, Client, vendor supported)
• AB Tasty Swift Client Provider (Swift, Client, vendor supported)

Ageris

• Ageris Java Server Provider (Java, Server, vendor supported)

AWS SSM

• AWS SSM JavaScript Node.js Provider (JavaScript, Server)
• AWS SSM Go Server Provider (Go, Server)

Azure App Configuration

• Azure App Configuration JavaScript Node.js Provider (JavaScript, Server)

Bucketeer

• Bucketeer Swift Client Provider (Swift, Client, vendor supported)
• Bucketeer Kotlin Client Provider (Kotlin, Client, vendor supported)
• Bucketeer JavaScript Web Provider (JavaScript, Client, vendor supported)
• Bucketeer React Web Provider (React, Client, vendor supported)
• Bucketeer JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Bucketeer Go Server Provider (Go, Server, vendor supported)

CloudBees

• CloudBees JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• CloudBees JavaScript Web Provider (JavaScript, Client, vendor supported)
• CloudBees Go Server Provider (Go, Server, vendor supported)
• CloudBees Java Server Provider (Java, Server, vendor supported)
• CloudBees .NET Server Provider (.NET, Server, vendor supported)
• CloudBees PHP Server Provider (PHP, Server)
• CloudBees Python Server Provider (Python, Server, vendor supported)

Cloudflare Flagship

• Cloudflare Flagship JavaScript Web Provider (JavaScript, Client, vendor supported)
• Cloudflare Flagship JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Cloudflare Flagship Go Server Provider (Go, Server, vendor supported)
• Cloudflare Flagship Python Server Provider (Python, Server, vendor supported)

Confidence by Spotify

• Confidence by Spotify JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Confidence by Spotify JavaScript Web Provider (JavaScript, Client, vendor supported)
• Confidence by Spotify Java Server Provider (Java, Server, vendor supported)
• Confidence by Spotify Kotlin Client Provider (Kotlin, Client, vendor supported)
• Confidence by Spotify Swift Client Provider (Swift, Client, vendor supported)
• Confidence by Spotify Python Server Provider (Python, Server, vendor supported)
• Confidence by Spotify Go Server Provider (Go, Server, vendor supported)

ConfigBee

• ConfigBee JavaScript Web Provider (JavaScript, Client, vendor supported)

ConfigCat

• ConfigCat JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• ConfigCat NestJS Node.js Provider (NestJS, Server, vendor supported)
• ConfigCat JavaScript Web Provider (JavaScript, Client, vendor supported)
• ConfigCat Angular Web Provider (Angular, Client, vendor supported)
• ConfigCat React Web Provider (React, Client, vendor supported)
• ConfigCat Go Server Provider (Go, Server, vendor supported)
• ConfigCat Java Server Provider (Java, Server, vendor supported)
• ConfigCat .NET Server Provider (.NET, Server, vendor supported)
• ConfigCat PHP Server Provider (PHP, Server, vendor supported)
• ConfigCat Python Server Provider (Python, Server, vendor supported)
• ConfigCat Rust Server Provider (Rust, Server, vendor supported)
• ConfigCat Ruby Server Provider (Ruby, Server, vendor supported)
• ConfigCat Kotlin Client Provider (Kotlin, Client, vendor supported)
• ConfigCat Swift Client Provider (Swift, Client, vendor supported)

ConfigDirector

• ConfigDirector JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• ConfigDirector Java Server Provider (Java, Server, vendor supported)
• ConfigDirector .NET Server Provider (.NET, Server, vendor supported)
• ConfigDirector Python Server Provider (Python, Server, vendor supported)
• ConfigDirector Dart Client Provider (Dart, Client, vendor supported)
• ConfigDirector JavaScript Web Provider (JavaScript, Client, vendor supported)
• ConfigDirector Kotlin Client Provider (Kotlin, Client, vendor supported)
• ConfigDirector Swift Client Provider (Swift, Client, vendor supported)

Datadog

• Datadog JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Datadog JavaScript Web Provider (JavaScript, Client, vendor supported)
• Datadog React Client Provider (React, Client, vendor supported)
• Datadog Swift Client Provider (Swift, Client, vendor supported)
• Datadog Kotlin Client Provider (Kotlin, Client, vendor supported)
• Datadog Go Server Provider (Go, Server, vendor supported)
• Datadog .NET Server Provider (.NET, Server, vendor supported)
• Datadog Java Server Provider (Java, Server, vendor supported)
• Datadog Python Server Provider (Python, Server, vendor supported)
• Datadog Ruby Server Provider (Ruby, Server, vendor supported)
• Datadog PHP Server Provider (PHP, Server, vendor supported)

DevCycle

• DevCycle JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• DevCycle NestJS Node.js Provider (NestJS, Server, vendor supported)
• DevCycle Java Server Provider (Java, Server, vendor supported)
• DevCycle Go Server Provider (Go, Server, vendor supported)
• DevCycle .NET Server Provider (.NET, Server, vendor supported)
• DevCycle JavaScript Web Provider (JavaScript, Client, vendor supported)
• DevCycle React Web Provider (React, Client, vendor supported)
• DevCycle Angular Web Provider (Angular, Client, vendor supported)
• DevCycle PHP Server Provider (PHP, Server, vendor supported)
• DevCycle Python Server Provider (Python, Server, vendor supported)
• DevCycle Ruby Server Provider (Ruby, Server, vendor supported)
• DevCycle Swift Client Provider (Swift, Client, vendor supported)
• DevCycle Kotlin Client Provider (Kotlin, Client, vendor supported)

dif.sh

• dif.sh JavaScript Node.js Provider (JavaScript, Server, vendor supported)

Environment Variable

• Environment Variable Go Server Provider (Go, Server, vendor supported)
• Environment Variable Java Server Provider (Java, Server, vendor supported)
• Environment Variable JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Environment Variable Rust Server Provider (Rust, Server, vendor supported)

Feat

• Feat JavaScript Web Provider (JavaScript, Client, vendor supported)
• Feat JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Feat Dart Server Provider (Dart, Server, vendor supported)

FeatBit

• FeatBit Java Server Provider (Java, Server, vendor supported)
• FeatBit .NET Server Provider (.NET, Server, vendor supported)
• FeatBit JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• FeatBit JavaScript Web Provider (JavaScript, Client, vendor supported)

Featureflip

• Featureflip JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Featureflip .NET Server Provider (.NET, Server, vendor supported)
• Featureflip Python Server Provider (Python, Server, vendor supported)
• Featureflip Go Server Provider (Go, Server, vendor supported)
• Featureflip Java Server Provider (Java, Server, vendor supported)
• Featureflip PHP Server Provider (PHP, Server, vendor supported)
• Featureflip Ruby Server Provider (Ruby, Server, vendor supported)

Featurevisor

• Featurevisor JavaScript Web Provider (JavaScript, Client, vendor supported)
• Featurevisor JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Featurevisor Go Server Provider (Go, Server, vendor supported)
• Featurevisor Swift Client Provider (Swift, Client, vendor supported)
• Featurevisor Java Server Provider (Java, Server, vendor supported)
• Featurevisor Ruby Server Provider (Ruby, Server, vendor supported)
• Featurevisor Python Server Provider (Python, Server, vendor supported)
• Featurevisor PHP Server Provider (PHP, Server, vendor supported)

Firebase Remote Config

• Firebase Remote Config Swift Client Provider (Swift, Client)

flagd

• flagd JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• flagd JavaScript Web Provider (JavaScript, Client, vendor supported)
• flagd Go Server Provider (Go, Server, vendor supported)
• flagd Java Server Provider (Java, Server, vendor supported)
• flagd .NET Server Provider (.NET, Server, vendor supported)
• flagd PHP Server Provider (PHP, Server, vendor supported)
• flagd Python Server Provider (Python, Server, vendor supported)
• flagd Rust Server Provider (Rust, Server, vendor supported)

Flagsmith

• Flagsmith Go Server Provider (Go, Server, vendor supported)
• Flagsmith Java Server Provider (Java, Server, vendor supported)
• Flagsmith JavaScript Web Provider (JavaScript, Client, vendor supported)
• Flagsmith JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Flagsmith Kotlin Client Provider (Kotlin, Client, vendor supported)
• Flagsmith .NET Server Provider (.NET, Server, vendor supported)
• Flagsmith Python Server Provider (Python, Server, vendor supported)
• Flagsmith Ruby Server Provider (Ruby, Server, vendor supported)
• Flagsmith Rust Server Provider (Rust, Server, vendor supported)
• Flagsmith Swift Client Provider (Swift, Client, vendor supported)

flagtide

• flagtide JavaScript Web Provider (JavaScript, Client, vendor supported)

Flagward

• Flagward JavaScript Web Provider (JavaScript, Client, vendor supported)

Flipswitch

• Flipswitch JavaScript Web Provider (JavaScript, Client, vendor supported)
• Flipswitch JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Flipswitch Angular Web Provider (Angular, Client, vendor supported)
• Flipswitch NestJS Node.js Provider (NestJS, Server, vendor supported)
• Flipswitch React Web Provider (React, Client, vendor supported)
• Flipswitch .NET Server Provider (.NET, Server, vendor supported)
• Flipswitch Go Server Provider (Go, Server, vendor supported)
• Flipswitch Java Server Provider (Java, Server, vendor supported)
• Flipswitch PHP Server Provider (PHP, Server, vendor supported)
• Flipswitch Python Server Provider (Python, Server, vendor supported)
• Flipswitch Ruby Server Provider (Ruby, Server, vendor supported)
• Flipswitch Rust Server Provider (Rust, Server, vendor supported)
• Flipswitch Swift Client Provider (Swift, Client, vendor supported)

Flipt

• Flipt Go Server Provider (Go, Server, vendor supported)
• Flipt Java Server Provider (Java, Server, vendor supported)
• Flipt JavaScript Web Provider (JavaScript, Client, vendor supported)
• Flipt JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Flipt Rust Server Provider (Rust, Server, vendor supported)
• Flipt Python Server Provider (Python, Server)

GO Feature Flag

• GO Feature Flag Ruby Server Provider (Ruby, Server, vendor supported)
• GO Feature Flag JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• GO Feature Flag JavaScript Web Provider (JavaScript, Client, vendor supported)
• GO Feature Flag Go Server Provider (Go, Server, vendor supported)
• GO Feature Flag Java Server Provider (Java, Server, vendor supported)
• GO Feature Flag .NET Server Provider (.NET, Server, vendor supported)
• GO Feature Flag Python Server Provider (Python, Server, vendor supported)
• GO Feature Flag Kotlin Client Provider (Kotlin, Client, vendor supported)
• GO Feature Flag Swift Client Provider (Swift, Client, vendor supported)
• GO Feature Flag PHP Server Provider (PHP, Server, vendor supported)
• GO Feature Flag NestJS Node.js Provider (NestJS, Server, vendor supported)
• GO Feature Flag Angular Web Provider (Angular, Client, vendor supported)
• GO Feature Flag React Web Provider (React, Client, vendor supported)
• GO Feature Flag Rust Server Provider (Rust, Server, vendor supported)

GrowthBook

• GrowthBook JavaScript Web Provider (JavaScript, Client, vendor supported)
• GrowthBook JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• GrowthBook Python Server Provider (Python, Server, vendor supported)
• GrowthBook Java Server Provider (Java, Server, vendor supported)
• GrowthBook Go Server Provider (Go, Server, vendor supported)
• GrowthBook .NET Server Provider (.NET, Server, vendor supported)

Harness

• Harness Go Server Provider (Go, Server)

Hypertune

• Hypertune JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Hypertune JavaScript Web Provider (JavaScript, Client, vendor supported)

Hyphen AI

• Hyphen AI .NET Server Provider (.NET, Server, vendor supported)
• Hyphen AI Go Server Provider (Go, Server)
• Hyphen AI Java Server Provider (Java, Server, vendor supported)
• Hyphen AI JavaScript Web Provider (JavaScript, Client, vendor supported)
• Hyphen AI JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Hyphen AI Python Server Provider (Python, Server, vendor supported)
• Hyphen AI Swift Client Provider (Swift, Client, vendor supported)

Intellitoggle

• Intellitoggle Dart Server Provider (Dart, Server, vendor supported)

Kameleoon

• Kameleoon .NET Server Provider (.NET, Server, vendor supported)
• Kameleoon Java Server Provider (Java, Server, vendor supported)
• Kameleoon Python Server Provider (Python, Server, vendor supported)
• Kameleoon Go Server Provider (Go, Server, vendor supported)
• Kameleoon Kotlin Client Provider (Kotlin, Client, vendor supported)
• Kameleoon Ruby Server Provider (Ruby, Server, vendor supported)
• Kameleoon PHP Server Provider (PHP, Server, vendor supported)
• Kameleoon Swift Client Provider (Swift, Client, vendor supported)
• Kameleoon JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Kameleoon JavaScript Web Provider (JavaScript, Client, vendor supported)

LaunchDarkly

• LaunchDarkly JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• LaunchDarkly JavaScript Web Provider (JavaScript, Client)
• LaunchDarkly Go Server Provider (Go, Server)
• LaunchDarkly Java Server Provider (Java, Server, vendor supported)
• LaunchDarkly .NET Server Provider (.NET, Server, vendor supported)
• LaunchDarkly PHP Server Provider (PHP, Server, vendor supported)
• LaunchDarkly Python Server Provider (Python, Server, vendor supported)
• LaunchDarkly Ruby Server Provider (Ruby, Server, vendor supported)

Mixpanel

• Mixpanel Go Server Provider (Go, Server, vendor supported)
• Mixpanel Java Server Provider (Java, Server, vendor supported)
• Mixpanel JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Mixpanel JavaScript Web Provider (JavaScript, Client, vendor supported)
• Mixpanel Kotlin Client Provider (Kotlin, Client, vendor supported)
• Mixpanel Python Server Provider (Python, Server, vendor supported)
• Mixpanel Ruby Server Provider (Ruby, Server, vendor supported)
• Mixpanel Swift Client Provider (Swift, Client, vendor supported)

MongoDB + Rules

• MongoDB + Rules Go Server Provider (Go, Server)

Multi-Provider

• Multi-Provider JavaScript Node.js Provider (JavaScript, Server)
• Multi-Provider JavaScript Web Provider (JavaScript, Client)
• Multi-Provider Java Server Provider (Java, Server)
• Multi-Provider .NET Server Provider (.NET, Server)

Nona

• Nona JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Nona JavaScript Web Provider (JavaScript, Client, vendor supported)
• Nona .NET Server Provider (.NET, Server, vendor supported)

Octopus Deploy

• Octopus Deploy .NET Server Provider (.NET, Server, vendor supported)
• Octopus Deploy Java Server Provider (Java, Server, vendor supported)
• Octopus Deploy JavaScript Web Provider (JavaScript, Client, vendor supported)

OFREP

• OFREP JavaScript Web Provider (JavaScript, Client, vendor supported)
• OFREP JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• OFREP Go Server Provider (Go, Server, vendor supported)
• OFREP Python Server Provider (Python, Server, vendor supported)
• OFREP .NET Server Provider (.NET, Server, vendor supported)
• OFREP Java Server Provider (Java, Server, vendor supported)

Optimizely

• Optimizely Go Server Provider (Go, Server)
• Optimizely Java Server Provider (Java, Server)

Pendo

• Pendo JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Pendo JavaScript Web Provider (JavaScript, Client, vendor supported)

PostHog

• PostHog JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• PostHog JavaScript Web Provider (JavaScript, Client, vendor supported)
• PostHog Python Server Provider (Python, Server, vendor supported)
• PostHog JavaScript Node.js Provider (JavaScript, Server)
• PostHog Go Server Provider (Go, Server)

Prefab

• Prefab Go Server Provider (Go, Server)

Reflag

• Reflag JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Reflag JavaScript Web Provider (JavaScript, Client, vendor supported)

Split

• Split JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Split JavaScript Web Provider (JavaScript, Client, vendor supported)
• Split Go Server Provider (Go, Server, vendor supported)
• Split Java Server Provider (Java, Server, vendor supported)
• Split .NET Server Provider (.NET, Server, vendor supported)
• Split PHP Server Provider (PHP, Server)
• Split Swift Client Provider (Swift, Client, vendor supported)
• Split Kotlin Client Provider (Kotlin, Client, vendor supported)

Statsig

• Statsig .NET Server Provider (.NET, Server)
• Statsig Go Server Provider (Go, Server)
• Statsig Java Server Provider (Java, Server)

Superposition

• Superposition Java Server Provider (Java, Server, vendor supported)
• Superposition JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Superposition Kotlin Client Provider (Kotlin, Client, vendor supported)
• Superposition Python Server Provider (Python, Server, vendor supported)
• Superposition Rust Server Provider (Rust, Server, vendor supported)

Switchbox

• Switchbox JavaScript Web Provider (JavaScript, Client, vendor supported)
• Switchbox React Web Provider (React, Client, vendor supported)
• Switchbox Python Server Provider (Python, Server, vendor supported)

Tggl

• Tggl JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Tggl JavaScript Web Provider (JavaScript, Client, vendor supported)
• Tggl .NET Server Provider (.NET, Server, vendor supported)

Togul

• Togul JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Togul Go Server Provider (Go, Server, vendor supported)
• Togul Python Server Provider (Python, Server, vendor supported)
• Togul Ruby Server Provider (Ruby, Server, vendor supported)
• Togul PHP Server Provider (PHP, Server, vendor supported)

Unleash

• Unleash Go Server Provider (Go, Server)
• Unleash Java Server Provider (Java, Server)
• Unleash JavaScript Web Provider (JavaScript, Client)
• Unleash Angular Web Provider (Angular, Client)
• Unleash React Web Provider (React, Client)
• Unleash .NET Server Provider (.NET, Server)
• Unleash JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• Unleash Kotlin Client Provider (Kotlin, Client, vendor supported)
• Unleash PHP Server Provider (PHP, Server, vendor supported)
• Unleash Python Server Provider (Python, Server, vendor supported)
• Unleash Ruby Server Provider (Ruby, Server, vendor supported)
• Unleash Rust Server Provider (Rust, Server, vendor supported)
• Unleash Swift Client Provider (Swift, Client, vendor supported)

UserDefaults

• UserDefaults Swift Client Provider (Swift, Client)

Vercel Flags

• Vercel Flags JavaScript Node.js Provider (JavaScript, Server, vendor supported)

VWO

• VWO JavaScript Node.js Provider (JavaScript, Server, vendor supported)
• VWO .NET Server Provider (.NET, Server, vendor supported)
• VWO Java Server Provider (Java, Server, vendor supported)
• VWO PHP Server Provider (PHP, Server, vendor supported)
• VWO Python Server Provider (Python, Server, vendor supported)
• VWO Go Server Provider (Go, Server, vendor supported)

Hooks

• OpenTelemetry Trace Hook (JavaScript, Server)
• OpenTelemetry Trace Hook (Go, Server)
• OpenTelemetry Trace Hook (Java, Server)
• OpenTelemetry Trace Hook (PHP, Server)
• OpenTelemetry Trace Hook (.NET, Server)
• OpenTelemetry Trace Hook (Python, Server)
• Validator Hook (Go, Server)
• Validator Hook (PHP, Server)
• Datadog Hook (PHP, Server)
• Sentry Hook (JavaScript, Client, vendor supported)
• Sentry Hook (Python, Client, vendor supported)
• Debounce Hook (JavaScript, Server, Client)

OFREP APIs

• ConfigCat OFREP API (vendor supported)
• DevCycle OFREP API (vendor supported)
• flagd OFREP API (vendor supported)
• FFlags OFREP API (vendor supported)
• Flaghoist OFREP API (vendor supported)
• Flipswitch OFREP API (vendor supported)
• Flipt OFREP API (vendor supported)
• GO Feature Flag OFREP API (vendor supported)
• Pydantic Logfire OFREP API (vendor supported)
• Togul OFREP API (vendor supported)

Integrations

• Dropwizard Openfeature (Java, Server)
• FlagLint (JavaScript, Server, vendor supported)