Mitel - Business Communications and Collaboration
Asterisk - An open source telephony switching and private branch exchange service for Linux.
SendMyCall - We offer virtual and toll free numbers in more than 65 countries and providing innovative, cost-effective solutions. Increase your Business presence worldwide - Contact Us!
Wazo.io - The UCaaS Platform Built for MSPs
Phonebooth - Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.
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.