DataMapper models for RESTful Authentication with Role-based Authorization

Session-oriented authentication and account management system for Ruby on Rails and PostgreSQL

CAS Authentication via Rack Middleware

API library for GAuthify.com (Google Authenticator, SMS, email multi factor authentication).

Simple authentication for Rails (7.1+) applications

Gem in a box with basic HTTP authentication and forced SSL, designed for use on Heroku or other cloud-based hosting services

Access token for client-side and API authentication.

Authentication engine.

A wrapper around Ruby's net-ldap library to ease authentication and record finding

Merb authentication gem

Client provider library for the authentication token storage service

Authentication via JWT (with encryption)

Simple Rails authentication generator

Simple authentication templates ready to be customized.

Mysql2::AwsRdsIam is an extension of mysql2 gem that adds support of IAM authentication when connecting to MySQL in Amazon RDS.

Streambird is an API For passwordless authentication for web2 and web3. Onboarding users within minutes. This is the official Ruby client.

ZeroMQ Authentication Protocol in Ruby

Add support for authentication

Use ClickTale (http://www.clicktale.com/) analytics service with rails sites that require sessions (user authentication for example)

ClaimToken encrypts and signs tokens to be used in a claim-based authentication system