auth_api gem provides restful api for registration and authentication of users

Description of Authcenter.

Description of TinyForum.

Opinionated app strategy used for authentication & role-based authorization.

Provide a Rails authentication active model.

Devise + Omniauth Authentication encapsulated in an Engine. Uses Devise. Parts taken from perens-instant-user and sso-devise-omniauth-provider

This gem will handle the integration of your app with the Authic service

Authify API Server library

Authist is a Ruby on Rails plugin that provides a simple way to add role-based authorization to your application. It can easily be plugged into any user or group models in your application, and allows you to define a set of access types that roles can provide. Roles and users' participation in th...

Bushido support for Authlogic

Cloudfuji support for Authlogic

Foo

A gem for rails giving vast flexibility in authorization management.

Simple Rails authentication generator

A simple authentication provider for Ruby/Rails app. Designed for mobile clients and is compatible with the OAuth 2.0 specification.

Mountable engine with user management and authenthication in your API.

Automate basic authentication for your coding challenges

AutoAdmin: an Admin UI that prefers hints over directions

remove before_action each controller

Simple authentication templates ready to be customized.