[prodigal_erik]

If I'm not a Mac user, I won't recognize a window manager that's only available on MacOS. And isn't there a (crappy) iTunes port for Windows?

[zymhan]

Well, iTunes is made by Apple.

It also doesn't require the kernel-level integration of Little Snitch.

Firewalls are way more about the backend than the frontend. They are not very portable at all.