An authentication and authorization system for Rails

Easy role authorization in rails

Role-based authorization system for Rails with a concise DSL for securing your Rails application. Acl9 makes it easy to get security right for your app, the access control code sits right in your controller, the syntax is very easy to understand, and acl9 makes it easy to test your access rules.

declarative_authorization is a Rails plugin for maintainable authorization based on readable authorization rules.

Aegis is an authorization solution for Ruby on Rails that supports roles and a RESTish, resource-style declaration of permission rules.

Contextually is a gem for running Rails controller tests under different user contexts in a convenient way. So you can test your authorization without much effort.

Quickly create before_filters in Rails that protect resources.

sinatra-dm-auth is an extension for Sinatra to add simple user authorization

Flexible, configurable authorization system for ActiveRecord and an access control DSL for ActionController.

Rack Middleware for OAuth Authorization

Simple authorization solution for Rails which is decoupled from user roles. All permissions are stored in a single location.

Simple role based authorization for rails

sinatra-session-auth is an extension for Sinatra to add orm-agnostic session based user authorization

Ruby on Rails authorization plugin

Rack Middleware for RPX Authorization, this rack middleware will make even easier to interact with rpx now

Ruby library that creates HTTP headers for OAuth Authorization using previously-obtained OAuth keys/secrets

Model-based read and write user authorization in Rails

A plugin for authorization in a ReSTful application.

Simple authorization system for Rails applications. Allows you to develop applications with a mixed role based authorization and a context based authorization model. Does not supply authentication.

Provides a simple DSL for specifying the authorization logic of your application. Install the gem, add a role attribute to your user model and your almost ready to go.