Version: (using KDE KDE 3.1.3) Installed from: SuSE RPMs KDE should support the appdir format (as it is supported by rox filer), so an application and all its files are in one single directory which contains the app named AppRun. A single click on this directory will run the application. This way, a user can install software easily without root privileges. Please add support for this format to KDE.
Well, there are currently less applicatioins which offer AppDIr-Packages, but maybe there would be more if KDE (and other desktops/window managers) would support this format.
Better change rox filer to support http://freedesktop.org/Standards/desktop-entry-spec than change KDE to change rox
These days it seems like "AppRun" is AppImage (https://github.com/AppImage/AppImageKit) - basing this guess on things like https://stackoverflow.com/questions/38772874/apprun-file-format. I've had reasonable success with appimaged (https://github.com/AppImage/AppImageKit/blob/09dfd37b6115881800fd35489b413032942b9859/README.md#appimaged-usage). Feel free to comment / reopen if it's not working.