Asterisk - An open source telephony switching and private branch exchange service for Linux.
TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
Wazo.io - The UCaaS Platform Built for MSPs
AnyDesk - AnyDesk is the world's most comfortable remote desktop application. Access all your programs, documents and files from anywhere, without having to entrust your data to a cloud service.
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.
TightVNC - TightVNC - VNC-Compatible Remote Control / Remote Desktop Software. Download TightVNCDownload TightVNC 1. 3. 10 - TightVNC Server - F. A. Read more about TightVNC.