Ruby on Rails 7 Authentication and User Management Engine using Devise with a nice-looking dashboard, admin panel and login views to get you going fast on your next project.

JWT Token Authenticationt

jwt-bouncer is an abstraction for JWT-based authentication/authorisation

Json Web Token Authentication for devise users. It can be use for APIs.

Authentication middleware for Rails API that uses JWTs

Roles Management interface for virtually every backend, mostly like OmniAuth for authentication

Bare essentials to quickly implement a custom authentication system on Rails using Warden.

Koinz clients require authentication via oauth koinz provider. They can also publish/subscribe for notifications in the koinz environment.

Generator that enabled LDAP authentication with a single command.

This this plugin for the leap platform provides user signup and login. It uses Secure Remote Password for the authentication.

OAuth2 (Facebook Connect) authentication strategy for connecting to lds.org thru LDS Connect with Ruby / Sinatra / etc

Manages collecting of facebook authentication and provides helpers. It uses koala and is built for Rails 3.

add authentication to your website - in 1 minute or less.

Library utilizing IDCRL for Microsoft Windows Live ID authentication.

Locomotive plugin for adding basic authentication to pages of a site

Loginza - an interactive JavaScript widget provides visitors to your sites, a wide range of options for authentication through the accounts of common WEB-portals and services

this gem provides connectivity to the Whiplash API for authentication and REST requests.

Uploads lolcommits to a remote server, with optional key or HTTP based authentication.

Basic authentication plugin for Lokka.

Uploads lolcommits to a remote server, with optional key or HTTP based authentication.