For authenticating against PAM (Pluggable Authentication Modules)

Unofficial Ruby library implementing AWS Cognito's SRP authentication flow

Time Based OTP/rfc6238 authentication for Devise

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

Oauth authentication for bombbomb.

A gem for rails that helps with basic database authentication.

A flexible authentication and authorization framework for Rack applications.

Simple authentication for Rails

An authentication bootstrapper for your Rails application.

The gem will handle adding API tokens to your user account, and handle the authentication of incoming requests.

Official Aqua.io API library client for ruby. Covers API authentication and methods for ICD-9 and ICD-10 code endpoints.

A rails authentication and authorization engine that reduces clutter in your controllers and views. Includes aliased link_to and button_to helpers that return an empty string if the current user is not permitted to follow the link. ...

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...

Run your own Authentication provider!

Rack Middleware transposing the authenticated identifier for Soar SC

Merb Slice that provides user authentication

API wrapper for AuthAnvil Two Factor Authentication

Simple gem that allows you to automatically spec your controllers authentication checks.

The AuthLane Sinatra Extension allows simple User authentication with support for different User roles. It comes with Sinatra helpers for easy integration into routes.

An incredibly bare bones authentication library