With this gem you can implement: CRUD functionality from you application, synchronize you database users with user_pools, handling authorization

Provides configurable, extensible authentication and authorization for Nitro.

Easy way to authentication and authorization

Hybrid authentication and authorization strategy for Google APIs. Combines the process for obtaining an authorized OAuth request token along with an OpenID authentication request.

This library currently supports generating a signed authorization header which is required to make requests to KindTap Platform APIs.

A flexible authorization plugin for Ruby on Rails.

Simple Rails 4 authorization solution for developer to permit user allowances. Developer whitelists controller actions and resources per user type.

Expandable object oriented authorization solution for Ruby/Rails applications

Easy RESTful authentication + authorization.

Extends Pundit with roles, allowing attribute and association level authorizations, suits modern APIs well

Rackish authentication for Rack apps. Provides access to the `Authorization` HTTP header.