Asterisk - An open source telephony switching and private branch exchange service for Linux.
Broadvoice - Cloud PBX solution for SMBs
Wazo.io - The UCaaS Platform Built for MSPs
Genesys Cloud - As the foundation of great customer experience, the Genesys PureCloud contact center platform empowers your business to provide excellent service across the entire customer journey.
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.
CallFire - Grow your business with virtual phone numbers, IVR, voice broadcasting, mass text messaging services and power dialing.