http://www.stuffit.com/win/index.html
StuffIt Expanderâ„¢
FREE Expansion and Decoding Only!
StuffIt Expander easily expands and decodes all those files you download from the Web or receive in your email. It quickly accesses StuffIt files, unzips zip files created by WinZip® and other zip utilities, plus decompresses tar, gzip and bzip files for Unix users. Just drag, drop, and you're done! Expander works seamlessly with Web browsers such as Internet Explorer™ and Netscape™. From BinHex to zip, StuffIt to MIME, Expander accesses more formats, in less time, with zero hassles!