Devise PostgreSQL authentication module

Time Based OTP/rfc6238 compatible authentication for Devise with Devise 4.2 and Rails 5 compatibility. Drop-in replacement for devise-otp.

PKCS #12 authentication for Devise.

Devise extension to allow authentication via Stormpath

Use session objects for token authentication

Internal authentication handlers for OmniAuth.

A (really) simple gem around fb_graph for canvas authentication in Facebook

Add support of OpenStack V3 authentication

Authentication layer for OmniAuth

Google Apps authentication

Adds authentication key and stores original device registration ids on requests

Genkan is authentication engine for Rails

Ruby gem for simple GitHub authentication

A library to enable per user / group authentication on a read / write basis for git repositories running over ssh

bridge for supporting multiple google authentication libraries

Use Kong OAuth2 Authentication with Grape.

A devise omniauth adapter for Rails apps, using Columbia University authentication.

Create a Rails app with authentication, authorization using Devise and CanCan

HTTP Basic authentication solution for Rails 3

Twitch authentication with OAuth 2. Result tokens can be used for API libraries, chat libraries or something else.