First developed by Phillip Katz, PKZIP is a compression utility that compacts files and reduces the overall storage space they require. To use a compressed PKZIP file, the files must first be decompressed using PKUNZIP or another compression program capable of unzipping a zip file.

PKUNZIP, Software terms, WinRAR, Zip

  • How to extract or decompress a compressed file.
  • PKZIP can be downloaded from the official PKWARE website.