OpenMeetings - Openmeetings provides video conferencing, instant messaging, white board, collaborative document...
X2Go - Get X2Go. Installing X2Go (client/server). Download X2Go Client (Windows installer (XP and Later), OS X 10. 9 and higher DMG, OS X 10. 10 and higher DMG or macOS 10.
BigBlueButton - Engage Your Online Students. BigBlueButton is a web conferencing system designed for online learning.
FastX - FastX is a remote desktop solution for Linux.
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Net Meeting - Net Meeting provides a free solution for web conferencing, audio and video conferencing.