APE (Ajax Push Engine)
zulsdesign 
Ajax Push Engine (APE) is an OpenSource technology allowing to exchange data between thousands of users through a web browser, without reloading and without external plugins.
As a complete packaged solution, it is designed to push real-time data in a lightweight, highly scalable and modular way, only using Javascript for the client side. With the use of those Web Stardards, APE is fully crossbrowser and uses all the lastest browser features and provides backward compatibilty for older ones.
