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.
PAC Manager - PAC Manager
Xpra - multi-platform screen and application forwarding system
SecPanel - SecPanel is an Ssh GUI for Unix.
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.
sshmenu - SSHMenu is a GNOME panel applet* that keeps all your regular SSH connections within a single mouse...