Maybe you know about this format: .rar

It's the format used by WinRar, an other compression utility.

The three big compression programs:

WinZip
WinRar
WinAce

They use:

.zip
.rar & .zip
.ace (& .zip/rar?)

I've tried all three of them, and I WinZip left my PC as first, about a week later followed by WinAce.

Right now I'm only using WinRar and I don't want anything else. IMHO WinRar is superiour to WinZip: WinRar can decompress much more different files and the .rar is much better than the .zip format (better compression ratio, the possibility to add a recovery record, multimedia compression, etc.)

What is your favourite compression utility?

BTW WinRar is available at: http://www.download.com and the site is at http://www.rar.de