VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Web based system for Computer Assisted Telephone Interviewing (CATI)
Cellular manager for mobile phones/modems
Multi user address book application accessable through the web.
H.323 Gatekeeper for VoIP and videconferencing
Callflow Sequence Diagram Generator
A command line utility for remote controlling Polycom VVX IP phones
An administration web interface for Mumble VoIP servers in PHP
Linux GUI USSD Sender
Webface witch extract CDR (Call Detail Records) from MySQL base.
GNU Telephony Services and Applications
CRM system based on vtiger, adapted to Polish companies.
GSM L1-L3 stack with SIP network interfaces