generated: '2026-07-19'
method: searched
source: https://github.com/optimizely
notes: >-
  Episerver rebranded to Optimizely in 2021. First-party client libraries span
  two lineages: the Optimizely Feature Experimentation SDKs (github.com/optimizely,
  Apache-2.0) and the Episerver/Optimizely CMS + Commerce .NET libraries on NuGet
  (owner "Episerver, Optimizely"). Only clearly first-party libraries are marked
  official: true.
packages:
  - language: javascript
    registry: npm
    name: "@optimizely/optimizely-sdk"
    url: https://www.npmjs.com/package/@optimizely/optimizely-sdk
    install: npm install @optimizely/optimizely-sdk
    source: https://github.com/optimizely/javascript-sdk
    official: true
  - language: javascript
    registry: npm
    name: "@optimizely/react-sdk"
    url: https://www.npmjs.com/package/@optimizely/react-sdk
    install: npm install @optimizely/react-sdk
    source: https://github.com/optimizely/react-sdk
    official: true
  - language: python
    registry: pypi
    name: optimizely-sdk
    url: https://pypi.org/project/optimizely-sdk/
    install: pip install optimizely-sdk
    source: https://github.com/optimizely/python-sdk
    official: true
  - language: java
    registry: maven
    name: com.optimizely.ab:core-api
    url: https://central.sonatype.com/artifact/com.optimizely.ab/core-api
    install: "implementation 'com.optimizely.ab:core-api:+'"
    source: https://github.com/optimizely/java-sdk
    official: true
  - language: csharp
    registry: nuget
    name: Optimizely.SDK
    url: https://www.nuget.org/packages/Optimizely.SDK
    install: dotnet add package Optimizely.SDK
    source: https://github.com/optimizely/csharp-sdk
    official: true
  - language: ruby
    registry: rubygems
    name: optimizely-sdk
    url: https://rubygems.org/gems/optimizely-sdk
    install: gem install optimizely-sdk
    source: https://github.com/optimizely/ruby-sdk
    official: true
  - language: php
    registry: packagist
    name: optimizely/optimizely-sdk
    url: https://packagist.org/packages/optimizely/optimizely-sdk
    install: composer require optimizely/optimizely-sdk
    source: https://github.com/optimizely/php-sdk
    official: true
  - language: go
    registry: pkg.go.dev
    name: github.com/optimizely/go-sdk
    url: https://pkg.go.dev/github.com/optimizely/go-sdk
    install: go get github.com/optimizely/go-sdk
    source: https://github.com/optimizely/go-sdk
    official: true
  - language: swift
    registry: cocoapods
    name: OptimizelySwiftSDK
    url: https://github.com/optimizely/swift-sdk
    install: pod 'OptimizelySwiftSDK'
    source: https://github.com/optimizely/swift-sdk
    official: true
  - language: csharp
    registry: nuget
    name: EPiServer.CMS
    url: https://www.nuget.org/packages/EPiServer.CMS
    install: dotnet add package EPiServer.CMS
    source: https://nuget.optimizely.com/
    official: true
    note: Episerver/Optimizely CMS (Content Cloud) core meta-package.
  - language: csharp
    registry: nuget
    name: EPiServer.ContentDeliveryApi
    url: https://www.nuget.org/packages/EPiServer.ContentDeliveryApi
    install: dotnet add package EPiServer.ContentDeliveryApi
    source: https://nuget.optimizely.com/
    official: true
    note: Content Delivery REST API for headless CMS.
  - language: csharp
    registry: nuget
    name: EPiServer.ServiceApi
    url: https://www.nuget.org/packages/EPiServer.ServiceApi
    install: dotnet add package EPiServer.ServiceApi
    source: https://nuget.optimizely.com/
    official: true
    note: Commerce Connect Service API integration endpoints.