Awesome
Matware Libraries for Joomla!
This libraries add some features to the best CMS of the World, Joomla!.
OAuth2 Authentication
This library is used to authenticate RESTful communications using the "Joomla CMS Web Services API Specification"
https://docs.google.com/document/d/1FVKGlV6BN6pu-YH2WR2pQHE3Ez7M6r7LD417GSw9ZSo/edit?usp=sharing
by http://docs.joomla.org/Web_Services_Working_Group
WebSocket
This library can convert your Joomla! website in a HTML5 WebSocket server that can share real-time communications between server and client browser.
http://www.w3.org/TR/2009/WD-websockets-20091029/
This article explain how to integrate WebSocket with Joomla!. It was writed time ago, new article is comming using Joomla! 3.0+
http://magazine.joomla.org/issues/issue-jan-2012/item/652-Integrating-WebSocket-to-Joomla