ActionAuth is an authentication Rails engine crafted to integrate seamlessly with your Rails application. Optimized for Rails 7.1.0, it employs the most modern authentication techniques and streamlined token reset processes.
A simple ruby authentication solution.
Rails authentication with email & password.
Flexible authentication solution for Rails with Warden.
Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.
OmniAuth is a flexible authentication system utilizing Rack middleware.
Rack-CAS is simple Rack middleware to perform CAS client authentication.
Ruby's Most Advanced Authentication Framework
WebAuthn ruby server library ― Make your Ruby/Rails web server become a conformant WebAuthn Relying Party