ETM (Extème tools Manager) was a GUI for the most important command-line programs for tracks creating. It even includes RV-Glue, TrackMK, among others. Three languages are available for it: French, English and Spanish.
This tool can not be found in any of the Re-Volt dedicated websites. It was available at Re-Volt Tip-Top in the past, but unfortunately, the site is no longer accessible nowadays. The latest version was 1.2.2.