O programa fica na subcategoria Múltiplos Desktops, que fica dentro de Theming.
Do desenvolvedor:
DropType is a desktop utility for anyone who has ever gone through the pain of changing the type of a file so they can use it (ie, downloaded files, Windows format files). DropType allows you to automatically convert any file using one of many predefined types (PS, QT, RB, Generic, etc.).
Confira mais programas, tais como BatChmod, PeaZip for macOS ou Camouflage, que podem ser similares a DropType.