Add the GSS-SPNEGO authentication mechanism in net-ldap gem

add authentication to your application - in 1 minute or less

The Authentication Gem for Progic ID

User Authentication Gem

Rails plugin to manage CAS, Authentication, and LDAP name info

A collection of authentication provider icons for Rails 3.1/Sprockets

Connect Ruby applications to Bigcommerce APIs through OAuth or basic authentication

This library simplifies life when it comes to authentication in a Facebook iFrame application

Fernet rack authentication middleware

Allows Ruby on Rails applications to easily integrate to federated authentication sources particuarly those served by Shibboleth service providers.

An authentication and service location service.

This generators provide you to easily setup your Rails 3 application, create authentication, messages, admin style scaffolding and many more

A gem providing HMAC based authentication for HTTP. This is the DNC Labs fork.

A ruby interface to the GitHub Contributions Archive API (https://githubcontributions.io). Get information about GitHub users and events, including all repositories a user has contributed to. No authentication required.

This is a Rack endpoint that provides Flickr authentication. Basically it is a lightweight alternative to the "omniauth-flickr" gem.

A simple Forge authentication client

Rails authentication with email & password. You can customize the behaviour of the remember me token.

Multi-token authentication Rails engine.

A free and unlimited API for Google Translate without authentication or API key.

A library for doing SASL based authentication mechanisms