SDK Compatibility Overview

This page provides an overview of the status and supported features of the OpenFeature SDKs.

Server-side SDKs

Server-side SDKs are intended for multi-user applications (e.g. web server applications) and conform to the dynamic-context paradigm.

	Java	Node.js	.NET	Go	Python	PHP	Ruby	Dart	Rust
Status
Spec version The version of the specification that the SDK is fully compliant with.	0.7.0	0.8.0	0.8.0	0.7.0	0.8.0	0.5.1	0.8.0	0.8.0	0.5.2
Release version The latest published release version.	1.18.1	1.19.0	2.8.1	1.16.0	0.8.3	2.1.0	0.4.0	0.0.13	0.2.7
Stable release OpenFeature employs semantic versioning for release versions. SDKs below 1.0 aim to minimize breaking changes but are allowed in order to avoid long-term technical debt. ✅: A major version 1 or greater is available ⚠️: A major version hasn't been released	✅	✅	✅	✅	⚠️	✅	⚠️	⚠️	⚠️
Features
Providers	✅	✅	✅	✅	✅	✅	✅	✅	✅
Targeting	✅	✅	✅	✅	✅	✅	✅	✅	✅
Hooks	✅	✅	✅	✅	✅	✅	⚠️	✅	✅
Logging	✅	✅	✅	✅	✅	✅	❌	✅	✅
Domains / Named clients	✅	✅	✅	✅	✅	❌	✅	✅	✅
Eventing	✅	✅	✅	✅	✅	⚠️	❌	✅	❌
Tracking	✅	✅	✅	✅	❓	❓	❓	❓	❓
Transaction Context Propagation	✅	✅	✅	✅	✅	❓	❌	✅	❓
Shutdown	✅	✅	✅	✅	✅	❌	⚠️	✅	✅
Extending	✅	✅	✅	✅	✅	✅	⚠️	✅	✅

_{Implemented: ✅ | In-progress: ⚠️ | Not implemented yet: ❌ | Unknown status: ❓}

Client-side SDKs

Client-side SDKs are intended for single user client applications (e.g. mobile phones, single-page web apps) and conform to the static-context paradigm.

	Web	Kotlin	iOS
Status
Spec version The version of the specification that the SDK is fully compliant with.	0.8.0	0.8.0	0.8.0
Release version The latest published release version.	1.6.2	0.7.0	0.4.0
Stable release OpenFeature employs semantic versioning for release versions. SDKs below 1.0 aim to minimize breaking changes but are allowed in order to avoid long-term technical debt. ✅: A major version 1 or greater is available ⚠️: A major version hasn't been released	✅	⚠️	⚠️
Features
Providers	✅	✅	✅
Targeting	✅	✅	✅
Hooks	✅	✅	✅
Logging	✅	❌	❌
Domains / Named clients	✅	❌	❓
Eventing	✅	✅	✅
Tracking	✅	✅	❌
Shutdown	✅	✅	❌
Extending	✅	⚠️	✅

_{Implemented: ✅ | In-progress: ⚠️ | Not implemented yet: ❌ | Unknown status: ❓}