Browse free open source VoIP software and projects below. Use the toggles on the left to filter open source VoIP software by OS, license, language, programming language, and project status.
Unified Communications Server
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
H.323 Gatekeeper for VoIP and videconferencing
Official Mirror for OMniLeads
Sets your Skype mood text to the song you're listening
Unified Communications System - PBX System
VozBox. Asterisk VoIP PBX.
Cyber-wrt pbx is embedded system in DD-Wrt router
Kazoo Live Medium. From Null to a Full Featured PBX on minutes