VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Unified Communications Server
VoIP/SIP Autodialer
H.323 Gatekeeper for VoIP and videconferencing
SIP softphone
Callflow Sequence Diagram Generator
A command line utility for remote controlling Polycom VVX IP phones
Java VoIP/SIP PBX system (replaced by jfPBX)
An administration web interface for Mumble VoIP servers in PHP
A complete invoice managment solution for Elastix PBX
Webface witch extract CDR (Call Detail Records) from MySQL base.
Cyber-wrt pbx is embedded system in DD-Wrt router