Do you know https://godbolt.org/ ?
Awesome tool.

Does anyone know about something like this, except a normal offline app, instead of server nonsense?

@Demolishun yes, i know it's possible.
that's still server nonsense, that's why i explicitly said "offline desktop app instead of server nonsense".

clang -S -mllvm source.c

In all seriousness, I don't think desktop apps exist anymore. Best you can get is a webapp wrapped with a browser.

@lungdart ...sadly, I'm slowly starting to lump electron and suchcrap into the desktop app cathegory.

so that one would suffice too. main point is so that i don't have to mess around with server-side administration nonsense to get it running.