Arch Linux distribution is not officially supported, however it's possible to install and use NoMachine on it.

If user runs a simple installation command like sudo /usr/NX/nxserver --install, they'll see the following (wrong) error message

ERROR: Unsupported operating system 'linux'.

The message will be changed with:

ERROR: Linux distribution not supported.

NoMachine development team suggests to run installation and update with a supported operating system as option, i.e.:
nxserver --install redhat.

The specified operating system must be one of the listed operating systems below. If not, NoMachine setup will autodetect the system or will choose the layout that better resembles one of the known OSs.

Linux 32-bit and 64-bit

Red Hat Enterprise 4/5/6/7
SLED 10.x/11.x
SLES 10/11/12
openSUSE 10.x/11.x/12.x/13.x/42.x/15.0
Mandriva 2009/2010/2011
Fedora 10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28
Debian GNU Linux 4.0/5.0/6.0/7.0/8.0/9.0
Ubuntu 8.04/8.10/9.04/9.10/10.4/10.10/11.04/11.10/12.04/12.10/13.04/13.10/14.04/14.10/15.04/15.10/16.04/16.10/17.04/17.10/18.04