freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
NICE inContact - Get the DMG Consulting report reprint on cloud contact centers.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
Five9 - Five9 provides cloud-based call center software for sales, marketing and support.
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.
Genesys PureConnect - The Genesys PureConnect platform is an all-in-one customer experience solution that’s easy to use, flexible and customizable to your business needs.