Remote Desktop Manager - Remote Desktop Manager is a remote connection and password management platform for IT pros trusted by more than 300 000 users in 130 countries.Add-ons - Remote Desktop .
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.
join.me - Instant screen sharing. Instant Aha!
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.
mRemoteNG - mRemoteNG is a fork of mRemote, an open source, tabbed, multi-protocol, remote connections manager.
KRDC - KRDC is the KDE Remote Desktop Client.