7z -- what's it?

I got a file in format 7z (file name kmel.7z), which appears to be some kind of compression scheme. Does anyone know what this is? Better yet, does anyone know what program I need in order to uncompress a 7z file?

 

http://en.wikipedia.org/wiki/7zip

If you don't like 7zip original program than you should try another file archiver that support 7zip files:

QuickZip
http://www.quickzip.org/

TUGZip
http://www.tugzip.com/

IZArc
http://www.izarc.org/

 

I am using this and am happy with it: http://www.7-zip.org/

 

You can use WinRAR to unpack 7z as well.

 

It is not free, but PowerArchiver is really good. Have been using it for years and really like it.

http://www.powerarchiver.com/


Have a good day,
HelpFromFrance

 

7-zip
IZARc(beta) -- bith free
(google)

Edit--sorry just saw paulBB posted already(so just take it as my choice)

 

If you use the last version of WinRAR, you can open that file...