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.
OpenMeetings - Openmeetings provides video conferencing, instant messaging, white board, collaborative document...
FastX - FastX is a remote desktop solution for Linux.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.
Net Meeting - Net Meeting provides a free solution for web conferencing, audio and video conferencing.
BigBlueButton - Engage Your Online Students. BigBlueButton is a web conferencing system designed for online learning.