Free compression software and Winzip alternative

7zip is a great, free software package that works well for compressing and decompressing many different compressed file types. This is specifically useful for .zip, .rar, .gzip, .tar, and many others. They list the compatible files on their homepage, www.7-zip.org. If you want to give it a try you can download it for free from http://www.7-zip.org/download.html. It's also nice to have so you don't have to deal with WinZip reminding you that it's not free software and that you're supposed to purchase it.