Seeable - Seeable is a Customer Success Platform for Coworking.
freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
Gainsight - Customer Success for the New Enterprise
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.
Kamailio - Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under...
Asterisk - An open source telephony switching and private branch exchange service for Linux.