Code

OAuth libraries are available in a variety of languages.

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

OAuth Providers

Open Source

• Authentik
• Authplane
• a12n-server
• Casdoor
• Glewlwyd
• Omejdn
• Keycloak
• OAuth.io
• ORY Hydra
• oidc-provider
• SimpleLogin
• Spring Authorization Server
• SSQ signon
• WSO2 Identity Server
• ZITADEL
• boruta
• Logto

Commercial

• Asgardeo
• Auth0
• Authgear
• Authress
• Authsignal
• cidaas
• Clerk
• Corbado
• Curity Identity Server
• Descope
• ForgeRock
• FusionAuth
• Kinde
• LoginRadius
• Okta
• PingId
• Red Hat Single Sign-On
• Scalekit
• Stytch
• ZITADEL Cloud
• IBM Cloud App ID
• Logto
• SSOJet

Related Projects and Services

• Vouch Proxy - an nginx reverse proxy solution that adds OAuth/OpenID authentication
• Osso - SAML to OAuth bridge
• OAuth Mock Server - A free and open-source OAuth mock server that simulates the biggest providers just by replacing the URL. Useful for E2E testing.

Legacy OAuth 1.0 Support

• See OAuth 1.0