Servetel - Communication management solution
Asterisk - An open source telephony switching and private branch exchange service for Linux.
EVS7 Inside Sales software - EVS7 Inside Sales software is a platform that allows users to manage their team, power dial their prospects, and can track all of their results, The platform helps users to nurture their leads, accelerate their sales, and they can do all this from a…
FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
Outreach - Outreach Is Your Sales Communication Platform
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.