A domain based multi-tenant PBX & voice switch for FreeSWITCH
VICIdial Contact Center Suite
The most affordable CRM system according to Capterra
Unified Communications Server
Unified Communications System - PBX System
Asterisk based VoIP pbx appliance
ERP, IP PBX, Accounting, CRM, Time tracking, and etc.
VozBox. Asterisk VoIP PBX.
Cyber-wrt pbx is embedded system in DD-Wrt router
CRM system based on vtiger, adapted to Polish companies.