Lawsuits aside... I guess a bunch of illegal-but-everyone-uses-them binary blobs of highly varying quality with some sources floating around. Oh, we had that,

Lawsuits aside... I guess a bunch of illegal-but-everyone-uses-them binary blobs of highly varying quality with some sources floating around. Oh, we had that, that was called "pirated [Stallman forgive me] Windows". I believe I had leaked W2K sources burned on some old CD, if they're still readable...