Description of AuditTrails.

Uses created_by_user_id and updated_by_user_id to store the changes made to a record. This is limited to storing the user who created the record and the last user to update the record.

The world's easiest database

Augment an ActiveRecord class by including one or moe additional ActiveRecord extension classes. The augmented class will inherit all attributes and methods, including those provided by ActiveRecord such as getters and setters, as local.

Auth1 is a Rails Engine for Auth0. Auth1 provides everything you need to use Auth0 in your Rails application.

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.

An unobtrusive ruby authentication library based on ActiveRecord.

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 them can be changed at runtime, providing a highly customizable access control system to your website administrators. Authist is designed with a minimal impact on your own code architecture in mind. It creates a few database tables for itself, but does not change anything whatsoever to the data of your own models, and only adds a minimal mixin to the model itself. This allows it to peacefully integrate with most authentication libraries. Authist can also be used in combination with more advanced authorization gems like Pundit to add runtime-editable access roles to their policies.

Bushido support for Authlogic

Cloudfuji support for Authlogic

Foo

A gem for rails giving vast flexibility in authorization management.

Simple Rails authentication generator