OAuth.io allows you to integrate 100+ providers really easily in your web app, without worrying about each provider's OAuth specific implementation.

Simply builds and verifies OAuth headers

Wrapper the AliCloud Oauth2 API

A Ruby wrapper for the OAuth 2.0 protocol built with a similar style to the original OAuth spec.

OAuth that just works ! This is the Ruby SDK for OAuth.io https://oauth.io

Simple OAuth 2.0 provider toolkit

An Atlassian OAuth2 strategy for OmniAuth 1.x. This allows you to login to Atlassian with your ruby app.

A gem for integrating oauth2.me into your ruby application

CLI utility to get OAuth token for three-leggged flows

OAuth 2 authentication with the Azure ActiveDirectory V2 API.

Wrapper the DingTalk Oauth2 API

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 y...

OAuth3 (backwards compatible with OAuth2) authentication strategy for connecting to any OAuth2 / OAuth3 provider in Ruby / Sinatra / etc

Because you don't allow strangers into your app, and OAuth 2.0 is the new awesome.

Ruby wrapper for the LinkedIn OAuth 2.0 API

A Rails plugin to OAuth v2.0 enable your rails application. This plugin implements v09 of the OAuth2 draft spec http://tools.ietf.org/html/draft-ietf-oauth-v2-09.

A simple wrapper for the oauth and oauth-plugin gems so that it is faster to include oauth in muck based applications.

An Windows Azure Active Directory OAuth2 strategy for OmniAuth

A minimal dependency library for interacting with a Cerner OAuth 1.0a Access Token Service for invoking Cerner OAuth 1.0a protected services or implementing Cerner OAuth 1.0a authentication.

RSolr aims to provide a simple and extensible library for working with Solr. This is a CUSTOMIZED version that OAuth signs every POST request for 2-legged OAuth. Only supports HMAC-SHA1. The original gem was written by Matt Mitchell and is located at http://github.com/mwmitchell/rsolr.