Whaddya know where to download a free and open source file archiver for ZIP TAR GZIP etc.?

Just in case you are looking for free version or open source to unzip tar zip gzip bzip2 and other file archiving tools, here's one for you.

"7-Zip is open source software. Most of the source code is under theGNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions." (2009, 7-zip.org)

If you know other file archiver tool for free to use, please share it with us.