The Ubuntu HUD - you love it or you hate it. Personally I rather like a classic desktop, so I use Xfce and Cinnamon, and I don't want to lose my menu in applications.

But the HUD is pretty awesome when your menus are complex and you forgot where an option sits. This makes that search trick very interesting.

I know the HUD is Unity specific. I am looking for a HUD-like tool to complement the menu in shells other than Unity.

There is Appmenu Runner for KDE that does this. There is also appmenu-qt for KDE.

Problem with the above is that it uses KDE libs, and it only works for KDE apps.

This is Linux, there aught to be something like this for GNOME/GTK apps, right?

Looking for any tool that can search the menus. I already use(d) Kupfer and Gnome-do, something like that would suffice if only it includes searching the menus for the currently focussed application.