Code

OAuth libraries are available in a variety of languages.

• Java
• .NET
• Python
• PHP
• Node.js
• Ruby
• Erlang
• Go
• Kotlin
• Elixir
• Rust
• Perl
• Objective C
• Swift
• Scala
• ColdFusion
• JavaScript
• QT / C++
• Lua
• Dart
• ActionScript
• PowerShell
• Elm

OAuth Services

• Auth0: Authorization Server as a service (or self hosted)
• Curity Identity Server: A self hosted Authorization Server
• Hydra an open source OAuth2 and OpenID Connect server for new and existing infrastructures
• OAuth.io (self hosted), and also you can use as an external service
• Okta
• SSQ signon (self hosted), and also you can use as an external service
• Glewlwyd (self hosted), lightweight OAuth2 server providing JSON Web Tokens, supports authentication with database or LDAP backend for users and clients.

Legacy OAuth 1.0 Support

• See OAuth 1.0