ARC version 6.02 by System Enhancement Associates.

LHA v2.55e - LHA is an older but popular archiver which shares similar compression statistics with PKZip.

PAK is a utility to create and maintain file archives in compressed form.  There are several advantages to compressing files.  On a hard disk, most files are accessed infrequently.  Reducing the size of these files allows more of them to remain on the hard disk, where they are more accessible than on a floppy in a file cabinet, and frees disk space for other use.

RAR for DOS is the DOS version of the popular WinRAR utility. If you're playing DOS games on a real DOS computer, you'll need an archive program to unzip the files, and ancient copies of PKUnzip may not be able to unpack newer ZIP archives, and it certainly won't be recognize newer formats like RAR and 7z. RAR 3.93 can decompress anything that WinRAR 3.93 can. RARLAB will no longer release new versions of RAR for DOS; this is the last version of RAR. Newer versions for Windows, Pocket PC, Linux, FreeBSD, and Mac OS X are available on the author's website.

Zoo is used to create and maintain collections of files in compressed form. It uses a Lempel-Ziv compression algorithm that gives space savings in the range of 20% to 80% depending on the type of file data. Zoo can store and selectively extract multiple generations of the same file. Data can be recovered from damaged archives by skipping the damaged portion and locating undamaged data with the help of fiz. The FreeDOS project advises NOT using this program with newer DOS systems - Here is a link with more info.