Java wrapper for the popular chat & VOIP service
PHP version of Google's phone number handling library
Software per Call Center
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
Cress is a comprehensive toolset for graphical service/workflow design
Java VoIP/SIP PBX system (replaced by jfPBX)
JAvascript Voicexml InterpretER
A simple noise gate app intended for use with VOIPs like Skype.
Positional Audio Communication for Minecraft with Mumble
Universal Framework to audit Voip protocols's security
Send Asterisk CDR to serial device
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java