Parsec - Streams games locally or over the internet
Tragofone - White-label VoIP Softphone with WebRTC and Auto-provisioning
Moonlight-Stream.org - Moonlight allows you to stream your collection of games from your GameStream-compatible PC to any...
tSIP - tomeko.net/software: SIP client for Windows.
Vortex Cloud Gaming - Cloud gaming app allowing to play PC games on Android, PC or even in web browser
PhonerLite - PhonerLite enables your PC to use it for internet telephony (VoIP , Voice over IP, SIP).