gnome-pkgtool is a GTK+/GNOME front-end to
Slackware package management tools (pkgtool). You
can install/uninstall/upgrade .tgz packages, build
packages from source and install them, and inspect
package content. It relies on the installpkg(8)
and removepkg(8) tools for installing and
uninstalling packages, and on checkinstall for
building packages from source.