.rar files

What exactly is a .rar file and whats the best way to expand one?

Thanks

They’re pretty much the same as zip files, just a different compression scheme.
http://www.rarlab.com/

I use 7-zip for RAR extraction because its lighter than WinRAR, and it also gives you an “extract here” option on your right click menu when you right click a RAR file. Just more convenient for me i guess.

http://www.7-zip.org/

WinRAR does the same thing, and gives you several options there as well.

Thx all