Cellular manager for mobile phones/modems
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open source Fax server software for inbound / outbound internet Faxing
Web based system for Computer Assisted Telephone Interviewing (CATI)
Unified Communications System - PBX System
Asterisk based VoIP pbx appliance
An administration web interface for Mumble VoIP servers in PHP
VozBox. Asterisk VoIP PBX.
CRM system based on vtiger, adapted to Polish companies.