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.
Issabel PBX - Unified Communications
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Unified Communications Server
A simple noise gate app intended for use with VOIPs like Skype.
Java wrapper for the popular chat & VOIP service
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
http://www.vaakpbx.com
OpenSource Call Center and Dialer System
H.323 Gatekeeper for VoIP and videconferencing
High performance, production quality STUN server and client library
Open source Fax server software for inbound / outbound internet Faxing
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
Callflow Sequence Diagram Generator
Baresip is a modular SIP User-Agent with audio and video support
1 on 1 Webcam Videochat Script with P2P Support