There are plenty of gems out there that deal with being an OAuth2 "consumer", where you redirect users to an OAuth2 "provider", allowing you to hand off authentication to a separate service. There are also plenty of gems that set you up as your own OAuth2 provider. ***BUT***, what happens when you want to separate your "authentication" server from your "resource" server? This gem is meant to be used on an API "resource" server, where you want to accept OAuth Access Tokens from a client, and validate them against a separate "authentication" server. This communication is outside the scope of the official OAuth 2 spec, but there is a need for it anyway.

Time Based OTP/rfc6238 compatible authentication for Devise

Time Based OTP/rfc6238 compatible authentication for Devise with Devise 4.2 and Rails 5 compatibility. Drop-in replacement for devise-otp.

Adds one time token authentication to devise

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

Devise Security NG with complex locking mechanism

Every time a user signs in, log the time and IP.

Module provide sms functions, easy to use and customize.

Track the last request and logout. Provides user.active? and User.actives methods

Devise extension that check for suspicious logins

Authentication for all Rails Api applications

For use with client side single page apps such as the venerable https://github.com/lynndylanhurley/ng-token-auth. This version is distinct as it supports multiple email addresses per user.

Extends Devise for Rails API only applications.

Rails 4 engine for managing devise users

Devise-web3 allows to easily implement login with metamask or any other ethereum wallet providers. It works by providing a nonce for a user to sign and then cryptographically checking that signature is valid. This allows for a simple one click login popular among web3 apps.

Tool for doing common PKI-related tasks

A simple function to log errors to sqlite3.

A toolbelt of patterns for your Rails applications: Operation, Event, Form

Converts to/from date & time inputs for managing scheduled models.

Dialect lookup