Browse free open source Telephony software and projects for BSD below. Use the toggles on the left to filter open source Telephony software by OS, license, language, programming language, and project status.
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.
VICIdial Contact Center Suite
The most affordable CRM system according to Capterra
A domain based multi-tenant PBX & voice switch for FreeSWITCH
Cellular manager for mobile phones/modems
High performance, production quality STUN server and client library
Enterprise telephony recording and retrieval system