This utility for Macintosh users will decompress just about any file (including StuffIt, Compact Pro, BinHex, and MacBinary files) that you come across while on the major commercial online services, surfing the Internet, or receiving email with compressed files attached. Additionally, this version of Aladdin StuffIt Expander can call helper applications to process file formats that have not yet been built in. It is also OS 9.0-compatible. When Aladdin StuffIt Expander is coupled with DropStuff with Expander Enhancer or StuffIt Deluxe (commercial version), the program becomes even more powerful with the added StuffIt compression and support for decoding additional formats.