Browse free open source PBX software and projects for Mac below. Use the toggles on the left to filter open source PBX software by OS, license, language, programming language, and project status.
Issabel PBX - Unified Communications
Unified Communications Server
VICIdial Contact Center Suite
Enterprise telephony recording and retrieval system
Respins of various open source PBX projects
Java VoIP/SIP PBX system (replaced by jfPBX)
CRM system based on vtiger, adapted to Polish companies.