Simple authentication for Rails

A flexible authentication and authorization framework for Rack applications.

Rubius provides a simple interface to RADIUS authentication

An authentication and authorization system for Rails

A gem for rails that helps with basic database authentication.

The email equivalent of has_secure_password for ActiveRecord.

A Ruby gem that provides OAuth 2.0 authentication and API client functionality for TradeStation's trading platform. Supports both production and sandbox environments.

Oauth authentication for bombbomb.

Ruby/NTLM HTTP provides NTLM authentication over http.

CLI tool to obtain certificates via ACME and update the matching TLSA records. The primary authentication method is http-01 via webroot for now, but dns-01 is supported too.

Action Interceptor provides methods to store return url's across multiple requests. Useful during authentication, registration, signing terms of use, etc.

HTTP dialog for the Acenda API with the oAuth2 authentication.

Non-password Authentication with Facebook Account Kit for Rails app

A gem to safely provide external application resources with a coherent and configurable API to a host application's authentication procedures.

Simple Instagram feed by hashtag, returns a JSON, no API authentication needed.

Simple API wrapper gem for Infobip two factor authentication service

Adds LDAP authentication support to Incline.

Add Cognito authentication to your Rails API

Using Github Pull Request Plugin and Jenkins with GitHub authentication

This widely-used plugin provides a foundation for securely managing user.