This gem adds events to common actions in devise including log in and out as well as password reset and locking

Extends Devise with an authentication strategy against Facebook's Open Graph and it's JavaScrip SDK

Firebase as authentication service behind the devise

This gem generates nicer default views styled with Foundation so you have a bit of a better starting point for your app.

Track failed attempts to sign in through devise to allow for increased security measures, such as locking sign in after failed attempts on several accounts from a single IP address.

I18n support for devise views based on Twitter Bootstrap 3

Authenticate users against an IMAP server

Interacts with the ruby-jira gem to provide authentication of a login against a JIRA system.

Cookie-based JWT authentication for devise with configurable token revocation strategies, forked from devise-jwt-cookie

Link helpers for Devise actions, including user session and registration links.

Devise sets a "remember_token" cookie for Remember Me logins, but not for standard logins. This extension sets a separate cookie on login, which makes sharing login state between same-domain web applications easier.

Devise extension to allow authentication using JWT

meetups oauth strategy captured for devise

A new authentication strategy named radius_authenticatable is added to the list of warden strategies when the model requests it. The radius server information is configured through the devise initializer. One or more servers may be configured. When a user attempts to authenticate via radius, the radiustar gem is used to perform the authentication with each server until a response is received. This authentication strategy can be used in place of the database_authenticatable or alongside it depending on the needs of the application.

A Routable, but not authenticatable devise module - useful for creating api authentication schemes not based on database user

add OAuth2 authentication to rails3 application

Implement user targeted cross-platform notifications with OneSignal & Devise in your Rails app. This gem can also be used without Devise, but it is primarily intended to be used along with some sort of user-management-system.

Extension that allows Devise to use PBKDF2 password hashing

Allows Devise to authenticate users from central-authentication services like LDAP and Shibboleth.

Elegant devise views with Semantic-ui.