The .sit format used in all the files on this web site is necessary to ensure small file sizes, which means faster download time. Some features of the .sit format compressions are that its the industry's fastest and tightest compression, saving you volumes of disk space.
Most files compress to less than half of their original size.
Millions of people are using a StuffIt product. The Internet and major online services such as CompuServe and America Online have millions of files in StuffIt format.