StuffIt Expander is a FREE tool to expand compressed or encoded files.
The expander is intuitive and easy to use. Just double-click, or drag and drop, and the contents of your archive are placed into the same directory as the Zip archive.
Expander gives you what you want – fast access to your files, for free.
Product features include:

• Expand StuffIt X archives
• Expand Zip archives
• Browse the contents StuffIt X and Zip archives
• Extract individual files from StuffIt X and Zip archives
• View thumbnail previews of images stored in StuffIt X archives

Windows Vista, XP, and 2000.