Remmina - Remmina is a remote desktop client written in GTK+, aiming to be useful for system administrators and travellers, who need to work with lots of remote computers in front of either large monitors or tiny netbooks.
TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
rdesktop - rdesktop is a free and open source remote desktop protocol client designed to make the users able to manage their PCs in a new way.
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.
KRDC - KRDC is the KDE Remote Desktop Client.
GoToAssist - RescueAssist, formerly GoToAssist, identifies, diagnoses & solves issues fast with our remote desktop support software. Learn more about RescueAssist today!