pkz204g.exe
This is version 2.04g of the PK Ware pkunzip and pkzip programs for DOS.
pkunzip.exe
This is version 2.04g of the PK Ware pkunzip program only.
pk263wsp.exe PKUnzip for Windows 95/98/NT
This is version 2.63 of the PK Ware pkunzip program for Windows 95/98/NT
pk263w16.exe PKUnzip for Windows 3.x
This is version 2.63 of the PK Ware pkunzip program for Windows 3.x.