New sign ups need to be certified before they can sign in

### Features ### * configure max challenge question attempts * per user level control if they really need challenge questions

Cloudfuji SSO authentication module for Devise. A slight variant of the excellent work from Nat Budlin on devise_cas_authenticatable.

devise couchrest_model plugin

Customize basic auth header when using token_authenticatable with devise.

This allows a Devise user’s validity to be restricted by a date range. This allows administrators to set up accounts that are valid to-, or from-, or between specific dates.

Devise strategy for use with your Rails engine

A gem to support duosecurity 2 factor auth.

Support Dynamoid ORM and generators for Devise

Add AES encryption support for Devise

AES encryption plugin for devise. Encrypt in such a way that the results work with MySQL's native AES_ENCRYPT and AES_DECRYPT functions

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

This is a simple, however wonderful devise extension to expire user password.

Devise expireable module

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

Firebase as authentication service behind the devise

Formtastic form builder for Devise with some extra features like full I18n support and dynamic page titles.

Devise extension for the G5 Auth service

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.

Use this gem for your heroku add-on