ZipZap is a archiver tool integrated to the WPS enviroment. Developed by Gary L. Robinson.

Gary L. Robinson does not develop for OS/2 anymore and released it as open source. ZipZap was originally shareware software, and currently I was only able to find the shareware binaries.
If anybody is willing to recompile this software to remove the registration box, or if anbody has a serial number please write back to me to include it on the package.
Link: http://hobbes.nmsu.edu/h-search.php?sh=1&button=Search&key=ZipZap_1-27
Martin