vlc for windows phone

Windows Phone Developer Tools consist of Visual Studio IDE.

FREE VoIP PBX: 3CX Phone system for Windows. No timeouts or limitations

SonicHANDY Mobile Phone Manager is a PC/Windows software.

Collanos Phone is a VoIP softphone and multi-protocol Instant Messenger

Jajah phone buddy adds automatic telephone dialling to almost any windows app.

Free Softphone for Windows. Works with any SIP/ VOIP provider and SIP PBX