Provides single sign-on authentication for web applications using the CAS protocol.

Easy authentication to an LDAP server(s)

Authlogic extension/plugin that provides RPX (rpxnow.com) authentication support

Includes utilities for authentication and password resets.

Provides single sign-on authentication for web applications using the CAS protocol.

Super simple authentication system for Rails, using username, email and password.

A comprehensive Ruby client library for JPS platform APIs with 69+ API modules, modular loading, OAuth authentication, and optimized performance

Simple, transparent, and powerful middleware authentication.

Provides single sign-on authentication for web applications using the CAS protocol. Modified to run on read only file systems.

A Rails Engine providing passwordless magic link authentication with opt-in impersonation and multi-tenancy modules.

simple twitter authentication wrapper

Tokenzen is a lightweight, model-agnostic authentication toolkit for Rails. It provides secure, polymorphic access token management for any ActiveRecord model with configurable expiration, AES-256 encryption, login, logout, and refresh token rotation.

Implements Auth0's setup for authentication/authorization along with setting a current_user method.

Couchbase backend for the Sorcery authentication framework

A Refinery CMS and activeadmin connector

If you've recently created an API you may have felt frustrated at the removal of Devise's token authenticatable module. ArcadeX fills the void with a set of functions that act on a token class to provide authentication to an API. Enjoy!

Allows Devise to authenticate users from central-authentication services like LDAP and Shibboleth.

Clowk Authentication, JWT verification, and future API access

florence is provide a Web Authentication library in Ruby on Rails

Provides an authentication solution for ruby applications being used at the Vienna University of Technology