Browse free open source VoIP software and projects for Desktop Operating Systems below. Use the toggles on the left to filter open source VoIP software by OS, license, language, programming language, and project status.
Browse on Tor / i2p - Anon p2p Chat / FileTx, Conf / Video VoIP
ERP, IP PBX, Accounting, CRM, Time tracking, and etc.
High performance, production quality STUN server and client library
Microscopic AGI framework.
H.323 Gatekeeper for VoIP and videconferencing
Webface witch extract CDR (Call Detail Records) from MySQL base.