These instructions were tested on OpenSUSE Leap 15.6 with RemoteBox 3.3, other configurations may vary.
They describe installing the RemoteBox client and assume you have root privileges to perform the install. In order to connect from RemoteBox, VirtualBox will need to be installed and configured on the server and if necessary, appropriate firewall ports will need to be opened.
3rd Party Packages
Repository Install
RemoteBox is available in the official OpenSUSE repositories which may be sufficient for your needs, although the version may differ from the latest. It can be installed as follows:
zypper install RemoteBox freerdp tigervnc
Tarball Install
Ensure the required dependencies are installed as follows:
zypper install perl-Gtk3 typelib-1_0-Gtk-3_0 typelib-1_0-GdkPixdata-2_0 perl-SOAP-Lite freerdp tigervnc
To launch RemoteBox, unpack the RemoteBox tarball and run the 'remotebox' executable.