StuffIt is a file decompression utility with the ability to uncompress virtually every known compressed file type – Mac or Windows. Standard and Deluxe versions are available to compress files as well.


Available to all UConn students, faculty and staff.


Free download for StuffIt Expander. Standard & Deluxe versions available from vendor’s website at cost.

System Requirements

A variety of different versions are available depending on the version of the Mac OS you are running. The breakdown:

  • Mac OS X 10.4 and higher – Version 11.x
  • Mac OS X 10.3 – 10.3.9 – Version 10.x
  • Mac OS X 10.1 – 10.2 – Version 8.x
  • Mac OS Classic 8.6 – 9.x – Version 7.x



Download the latest version of StuffIt Expander from the UConn FTP server. Visit the vendor’s website for previous versions of StuffIt.