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
H.323 Gatekeeper for VoIP and videconferencing
Baresip is a modular SIP User-Agent with audio and video support
A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end
High performance, production quality STUN server and client library
Open source Fax server software for inbound / outbound internet Faxing
An administration web interface for Mumble VoIP servers in PHP
SIP softphone