The new cool thing in telecom is WebRTC.
"WebRTC (Web Real-Time Communication) is a media engine and set of APIs (free and openly available at webrtc.org) that bestows upon web browsers Real-Time Communications (RTC) capabilities—particularly low-cost, high-quality, voice and video services and P2P file sharing." [WebRTC for Dummies]
Another good article that explains it is here. Basically, WebRTC uses browsers and java script to enable real-time collaboration.