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
High performance, production quality STUN server and client library
Open source Fax server software for inbound / outbound internet Faxing
Callflow Sequence Diagram Generator
Java VoIP/SIP PBX system (replaced by jfPBX)
H.323 Gatekeeper for VoIP and videconferencing
1 on 1 Webcam Videochat Script with P2P Support
A command line utility for remote controlling Polycom VVX IP phones
SIP softphone