What to use to connect to nomachine's server?

I was told to use nomachine to access a remote server.

Is there anything else that I could use instead?

The remote server is already running the nomachine's server application. I would like to use an application supported by Ubuntu (for nomachine's package I had to enable a PPA, using the directions here).

Solution 1:

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. Remmina supports multiple network protocols in an integrated and consistant user interface. Currently RDP, VNC, NX, XDMCP and SSH are supported.

Remmina is released in separated source packages:

 "remmina", the main GTK+ application
 "remmina-plugins", a set of plugins
 "remmina-gnome", the GNOME desktop applet
 "remmina-xfce", the Xfce panel plugin

Remmina is free and open-source software, released under GNU GPL license.

screenshots : here

Solution 2:

Xrdp

xrdp is the Remote Desktop Protocol to the X window system

Install Xrdp

Use the terminal server client to connect.