Only a few years ago, WinZip was the primary choice for archive management and, to be fair, is the primary reason why the .zip format became so popular across every operating system. Even Mac OS X has moved to .zip, even though it used the .sit format for years. Now Windows and OS X enable you to quickly open and create basic .zip archives from your files. However, what happens if you want to open an alternative archive format or want to compress your files beyond what the .zip format can offer?29 Nov 2008