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
• C

OAuth Providers

Open Source

• a12n-server
• Glewlwyd
• Keycloak
• OAuth.io
• ORY Hydra
• SimpleLogin
• SSQ signon

Commercial

• Auth0
• Curity Identity Server
• FusionAuth
• Okta
• Red Hat Single Sign-On
• cidaas
• LoginRadius
• ForgeRock

Related Projects and Services

• Vouch Proxy - an nginx reverse proxy solution that adds OAuth/OpenID authentication
• Osso - SAML to OAuth bridge

Legacy OAuth 1.0 Support

• See OAuth 1.0