This week I was looking for a book. I couldn't find it at libgen, zlibrary, google with filetype: nor torrent. Fired up aMule, and it had more than 10 sources, downloaded in 30 seconds.
to me it goes back to Doom days
Nah, it was all about .arj then.
Oh wow, ARJ, and of course, ARC. Now I want to dial up to a BBS with my fancy 14.4K modem and download WADs via ZMODEM.
.ace and WinAce -- which died out fast, and eventually had a nasty security bug in unacev2.dll that caused it to be removed from most 3rd party utilities.