An open source HTML5 SIP (Session Initiation Protocol) client entirely written in javascript for integration in social networks (FaceBook, Twitter, Google+), online games, e-commerce sites... without an extension, plugin or gateway.
Source: https://code.google.com/p/sipml5/
This is the world's first open source HTML5 SIP client (May 12, 2012) entirely written in javascript for integration in social networks (FaceBook, Twitter, Google+), online games, e-commerce sites... No extension, plugin or gateway is needed. The media stack rely on WebRTC.
The client can be used to connect to any SIP or IMS network from your preferred browser to make and receive audio/video calls and instant messages. It's also possible to make calls to PSTN or any SIP-legacy network using webrtc2sip.org
The protocol parsers (SIP, SDP...) are highly optimized using Ragel lookup tables and is suitable for embedded systems with limited memory and low computing power.
sipML5 solution also contains webrtc2sip, click-to-call, webrtc4all and SIP TelePresence (Video Group chat) client components.