A web framework built on top of Rack, it has the simplicity of sinatra and the structure of rails

Devise based AD User Logins

A flexible authentication and authorization framework for Rack applications.

Rails 3 engine for managing an app's assets, users, pages, blog, SEO and Social Media Integration

AuthStrategies is a Warden implementation for sinatra.

In Devise you own controllers, models and views. With Booth you don't own the models (much like ActiveStorage). The Controllers you do own, but the implementation is pretty much just calling Booth helpers. The views you own completely, just as in Devise.

With the BrowserID provider you enable your users to authenticate themselves across the web using a single authority - DISCONTINUED

A great tool that allows us to create beautiful geospatial projects for you in less time and less money

Warden / Devise strategies to use Google's Federated OpenID with Google Apps

ClassyCAS provides private, centralized, cross-domain, platform-agnostic centralized authentication than can hook in with modern Ruby authentication systems.

Base controller, model, resource and policy classes; authentication with JWT, per request tenant selection, exception reporting

Provides token-based authentication for Rails API apps.

The Cyclid CI system

The Cyclid CI system

Rack compatible user authentication microservice. Can be run standalone or mounted into another rack app.

devise with bootstrap

Auditing Plugin for Devise

deveise with bootstrap

Flexible authentication solution for Rails with Warden, translated in FR by Ennder

Firebase as authentication service behind the devise