If you've been using PackIt for file compression, then you’ll love StuffIt, a new shareware utility. With StuffIt you can combine and compress files tighter than you can with PackIt, before sending them over a modem. When StuffIt compressed a 374K file, it came out 61K tighter than PackIt compressed version. In addition, StuffIt offers better performance and new archiving features. It even works on PackIt archives faster than PackIt does.
StuffIt maintains an archive directory for easy file retrieval; you can also create an archive from a directory and add files to, or delete them from, an existing archive. Unfortunately StuffIt does not let you archive nested directories.
For a printed report of archive constraints, simply choose Generate Report from the menu. To convert or add PackIt files to a StuffIt archive, choose Unpack, select the Convert button, and StuffIt unpacks the files and adds them to the currently opened archive.
StuffIt supports three of the most well known file-compression algorithms: RLE (run length encoding), a variation of which is used by MacPaint; Lempel-Zev, which encodes repeated strings; and Huffman, which is similar to Lempel-Zev. For files under 25K, StuffIt automatically uses RLE. For all other files, however, you choose one or a combination of the other two techniques. StuffIt won’t analyze the data and use the technique that is most efficient.
Cohen, Dennis. (March 1988). Stuff and Send. Macworld. (pg. 177).