Browse free open source VoIP software and projects for BSD below. Use the toggles on the left to filter open source VoIP software by OS, license, language, programming language, and project status.
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
A simple noise gate app intended for use with VOIPs like Skype.
Unified Communications Server
VoIP/SIP Autodialer
High performance, production quality STUN server and client library
Java VoIP/SIP PBX system (replaced by jfPBX)
An administration web interface for Mumble VoIP servers in PHP
H.323 Gatekeeper for VoIP and videconferencing
Open source Fax server software for inbound / outbound internet Faxing
Cisco IP Phone Inventory - Serial Number, MAC, Model, and more...
Baresip is a modular SIP User-Agent with audio and video support
survey research software integrate for CATI/ CAWI/ CAMI survey