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.
Wazo.io - The UCaaS Platform Built for MSPs
Avaya - Avaya is a leading communication platform that provides the complete portfolio of software and services for multi-touch contact center and unfiled communications offered on premises in the cloud or a hybrid.
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.
Verint Workforce Optimization - Manage your workforce and drive performance so you can make better decisions, increase productivity and improve CX via staffing and performance solutions.