omniauth/omniauth

Flexible authentication solution for Rails with Warden.

Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.

▦ Universal, standards-based auth provider.

Package goth provides a simple, clean, and idiomatic way to write authentication packages for Go web applications.

Easy integration with OAuth 2.0 service providers.

Authentication for the Web.

The tiniest OpenID Certified™ authorization and authentication server you have ever seen.

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

Token based authentication for Rails JSON APIs. Designed to work with jToker and ng-token-auth.