PHP version of Google's phone number handling library
Java VoIP Softphone (SIP) (replaced by jfPhone)
Accent interfaces and controls systems through goals and policies
Enterprise telephony recording and retrieval system
H.323 Gatekeeper for VoIP and videconferencing
Java VoIP/SIP PBX system (replaced by jfPBX)
JAvascript Voicexml InterpretER
A simple noise gate app intended for use with VOIPs like Skype.
BD BLACK HAT HACKERS SMS & Email Spoofer
Universal Framework to audit Voip protocols's security
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java
A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end