generated: '2026-08-13'
method: searched
source: >-
  registry.npmjs.org, pypi.org, rubygems.org, repo.packagist.org, api.nuget.org,
  search.maven.org, proxy.golang.org, pub.dev and api.github.com — all queried
  unauthenticated 2026-08-13
description: >-
  First-party Optimizely client libraries. Optimizely maintains a full-matrix Feature
  Experimentation SDK family (JavaScript, React, Python, Ruby, PHP, C#, Java, Android,
  Swift, Go, Flutter) plus the self-hosted Agent microservice, the Optimizely Connect
  Platform (OCP) app SDK/CLI family published under the legacy @zaiusinc scope, and the
  Opal tools SDK. Every SDK in the experimentation family shipped a release in 2026 —
  there is no abandonment signal in this catalog.
packages:
- language: javascript
  registry: npm
  name: '@optimizely/optimizely-sdk'
  version: 6.5.0
  published: '2026-07-08'
  url: https://www.npmjs.com/package/@optimizely/optimizely-sdk
  repository: https://github.com/optimizely/javascript-sdk
  install: npm install @optimizely/optimizely-sdk
  official: true
  product: Feature Experimentation
- language: javascript
  registry: npm
  name: '@optimizely/react-sdk'
  version: 4.1.0
  published: '2026-07-10'
  url: https://www.npmjs.com/package/@optimizely/react-sdk
  repository: https://github.com/optimizely/react-sdk
  install: npm install @optimizely/react-sdk
  official: true
  product: Feature Experimentation
- language: python
  registry: pypi
  name: optimizely-sdk
  version: 5.6.0
  published: '2026-07-10'
  url: https://pypi.org/project/optimizely-sdk/
  repository: https://github.com/optimizely/python-sdk
  install: pip install optimizely-sdk
  official: true
  product: Feature Experimentation
- language: ruby
  registry: rubygems
  name: optimizely-sdk
  version: 5.3.0
  published: '2026-05-05'
  url: https://rubygems.org/gems/optimizely-sdk
  repository: https://github.com/optimizely/ruby-sdk
  install: gem install optimizely-sdk
  official: true
  product: Feature Experimentation
- language: php
  registry: packagist
  name: optimizely/optimizely-sdk
  version: 4.0.3
  published: '2026-05-20'
  url: https://packagist.org/packages/optimizely/optimizely-sdk
  repository: https://github.com/optimizely/php-sdk
  install: composer require optimizely/optimizely-sdk
  official: true
  product: Feature Experimentation
- language: csharp
  registry: nuget
  name: Optimizely.SDK
  version: 4.4.0
  published: '2026-07-10'
  url: https://www.nuget.org/packages/Optimizely.SDK
  repository: https://github.com/optimizely/csharp-sdk
  install: dotnet add package Optimizely.SDK
  official: true
  product: Feature Experimentation
- language: java
  registry: maven
  name: com.optimizely.ab:core-api
  version: 4.2.2
  published: '2025-05-28'
  url: https://central.sonatype.com/artifact/com.optimizely.ab/core-api
  repository: https://github.com/optimizely/java-sdk
  official: true
  product: Feature Experimentation
  note: >-
    Maven Central shows core-api 4.2.2 (2025-05-28) while the java-sdk GitHub repo tagged
    4.5.0 on 2026-07-07 — the published artifact trails the tagged release by about a year.
- language: java
  registry: maven
  name: com.optimizely.ab:core-httpclient-impl
  version: 4.2.2
  published: '2025-05-28'
  url: https://central.sonatype.com/artifact/com.optimizely.ab/core-httpclient-impl
  repository: https://github.com/optimizely/java-sdk
  official: true
  product: Feature Experimentation
- language: java
  registry: maven
  name: com.optimizely.ab:android-sdk
  version: 5.0.1
  published: '2025-05-30'
  url: https://central.sonatype.com/artifact/com.optimizely.ab/android-sdk
  repository: https://github.com/optimizely/android-sdk
  official: true
  product: Feature Experimentation
  note: >-
    Companion artifacts android-sdk-shared, android-sdk-odp, android-sdk-event-handler,
    android-sdk-datafile-handler and android-sdk-user-profile all publish at 5.0.1 / 2025-05-30.
- language: swift
  registry: github
  name: optimizely/swift-sdk
  version: v5.4.2
  published: '2026-07-09'
  url: https://github.com/optimizely/swift-sdk
  repository: https://github.com/optimizely/swift-sdk
  install: 'Swift Package Manager: https://github.com/optimizely/swift-sdk'
  official: true
  product: Feature Experimentation
  note: Distributed via SPM/CocoaPods from the GitHub tag; there is no central registry metadata endpoint to query.
- language: go
  registry: goproxy
  name: github.com/optimizely/go-sdk/v2
  version: v2.5.0
  published: '2026-07-14'
  url: https://pkg.go.dev/github.com/optimizely/go-sdk/v2
  repository: https://github.com/optimizely/go-sdk
  install: go get github.com/optimizely/go-sdk/v2
  official: true
  product: Feature Experimentation
  note: v1 line (github.com/optimizely/go-sdk) is frozen at v1.8.5 / 2023-10-03.
- language: dart
  registry: pub.dev
  name: optimizely_flutter_sdk
  version: 3.6.0
  published: '2026-07-09'
  url: https://pub.dev/packages/optimizely_flutter_sdk
  repository: https://github.com/optimizely/optimizely-flutter-sdk
  install: flutter pub add optimizely_flutter_sdk
  official: true
  product: Feature Experimentation
- language: go
  registry: github
  name: optimizely/agent
  version: v4.5.0
  published: '2026-07-14'
  url: https://github.com/optimizely/agent
  repository: https://github.com/optimizely/agent
  official: true
  product: Feature Experimentation
  note: >-
    Standalone open-source microservice, not a client library — distributed as a Docker
    image and GitHub release binaries, with a Helm chart at optimizely/optimizely-agent-helm.
    Its REST contract is openapi/_original/optimizely-feature-experimentation-optimizely-agent-api-openapi.json.
- language: javascript
  registry: npm
  name: '@optimizely/ocp-cli'
  version: 1.4.3
  published: '2026-04-03'
  url: https://www.npmjs.com/package/@optimizely/ocp-cli
  install: npm install -g @optimizely/ocp-cli
  official: true
  product: Optimizely Connect Platform
  note: The `ocp` command surface; see cli/optimizely-cli.yml.
- language: javascript
  registry: npm
  name: '@zaiusinc/app-sdk'
  version: 3.4.1
  published: '2026-05-22'
  url: https://www.npmjs.com/package/@zaiusinc/app-sdk
  install: npm install @zaiusinc/app-sdk
  official: true
  product: Optimizely Connect Platform
  note: >-
    Published under the legacy @zaiusinc scope — Zaius was acquired by Optimizely in 2021
    and became ODP/OCP. Optimizely's own ocp-skills repo names this package as the OCP app SDK.
- language: javascript
  registry: npm
  name: '@zaiusinc/node-sdk'
  version: 3.0.0
  published: '2025-11-19'
  url: https://www.npmjs.com/package/@zaiusinc/node-sdk
  install: npm install @zaiusinc/node-sdk
  official: true
  product: Optimizely Data Platform
- language: javascript
  registry: npm
  name: '@optimizely-opal/opal-tools-sdk'
  version: 0.1.38-dev
  published: '2026-08-03'
  url: https://www.npmjs.com/package/@optimizely-opal/opal-tools-sdk
  install: npm install @optimizely-opal/opal-tools-sdk
  official: true
  product: Opal
  note: Latest dist-tag is a -dev prerelease; no stable 1.x has been published.
- language: javascript
  registry: npm
  name: '@optimizely-opal/opal-tool-ocp-sdk'
  version: 1.1.16
  published: '2026-07-29'
  url: https://www.npmjs.com/package/@optimizely-opal/opal-tool-ocp-sdk
  install: npm install @optimizely-opal/opal-tool-ocp-sdk
  official: true
  product: Opal / Optimizely Connect Platform
- language: javascript
  registry: npm
  name: '@optimizely/cms-cli'
  version: 2.2.0
  published: '2026-07-23'
  url: https://www.npmjs.com/package/@optimizely/cms-cli
  repository: https://github.com/episerver/content-js-sdk
  install: npm install -D @optimizely/cms-cli
  official: true
  product: Content Management System (SaaS)
- language: javascript
  registry: npm
  name: '@optimizely/cms-extensibility-sdk'
  version: 1.0.1
  published: '2026-06-16'
  url: https://www.npmjs.com/package/@optimizely/cms-extensibility-sdk
  install: npm install @optimizely/cms-extensibility-sdk
  official: true
  product: Content Management System (SaaS)
- language: javascript
  registry: npm
  name: '@optimizely/ocp-cms-ui-extensions-sdk'
  version: 1.0.0-beta.1
  published: '2026-05-11'
  url: https://www.npmjs.com/package/@optimizely/ocp-cms-ui-extensions-sdk
  install: npm install @optimizely/ocp-cms-ui-extensions-sdk
  official: true
  product: Content Management System (SaaS)
  note: Beta; see components/optimizely-components.yml.
- language: javascript
  registry: npm
  name: '@episerver/content-delivery'
  version: 1.1.0
  published: '2022-03-25'
  url: https://www.npmjs.com/package/@episerver/content-delivery
  repository: https://github.com/episerver/content-delivery-js-sdk
  install: npm install @episerver/content-delivery
  official: true
  product: Content Management System (PaaS)
  note: >-
    ABANDONMENT SIGNAL — last published 2022-03-25, more than four years before this probe,
    under the pre-rename @episerver scope. The CMS (SaaS) surface has moved to
    @optimizely/cms-cli and the Content Graph.
- language: javascript
  registry: npm
  name: '@optimizely/js-sdk-logging'
  version: 0.3.1
  published: '2021-10-13'
  url: https://www.npmjs.com/package/@optimizely/js-sdk-logging
  official: true
  product: Feature Experimentation
  note: Internal helper, superseded — last published 2021-10-13 and folded into the main JavaScript SDK.
- language: javascript
  registry: npm
  name: optimizely-server-sdk
  version: 1.5.0
  published: '2017-12-09'
  url: https://www.npmjs.com/package/optimizely-server-sdk
  repository: https://github.com/optimizely/node-sdk
  official: true
  deprecated: true
  product: Feature Experimentation
  note: Legacy unscoped Node SDK, superseded by @optimizely/optimizely-sdk in 2018.
third_party_noted:
- {name: optimizely (crates.io), version: 0.5.0, published: '2026-01-19', official: false, note: 'Community Rust SDK by MarkBiesheuvel; self-described as unofficial. Optimizely ships no Rust SDK.'}
- {name: '@jaxon-digital/optimizely-dxp-mcp', official: false, note: Third-party MCP server for Optimizely DXP, not published by Optimizely.}
- {name: '@remkoj/optimizely-cms-cli', official: false, note: Community CMS CLI, not published by Optimizely.}
summary:
  official_packages: 24
  languages: [javascript, typescript, python, ruby, php, csharp, java, kotlin, swift, go, dart]
  registries: [npm, pypi, rubygems, packagist, nuget, maven, goproxy, pub.dev, github]
  stale_official: 4
  note: >-
    stale_official counts packages whose latest release predates 2025:
    @episerver/content-delivery (2022), @optimizely/js-sdk-logging (2021),
    optimizely-server-sdk (2017), and the Maven Java/Android artifacts which trail their
    GitHub tags.