Simple HTTP proxy which adds Conjur authentication headers

Simple JWT based authentication

Simple admin function for Rails authentication.

Extension to devise to allow authentication with Archangel

add OAuth2 authentication to rails3 application

Devise extension to allow authentication to multiple LDAP servers, or with multiple configurations to the same LDAP server. Fork of the devise_ldap_authenticatable project.

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

Perform 2-factor authentication using duosecurity.com

EdgeAuth is an authentication solution

Email based authentication with mobile devices

Internal authentication handlers for OmniAuth.

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

Allow authentication via an application token

A gem that provides authentication by JWT(json web token) with faye.

Add support of OpenStack V3 authentication

Authentication layer for OmniAuth