NPack

NPack is a file compression utility for DOS. It was developed by Stac Electronics and later acquired by Symantic in 1991. It uses Lempel–Ziv–Stac compression.

Identification
Files begin with ASCII string "".

Software

 * https://github.com/Sembiance/dexvert/blob/master/dos/NDFIX-1/NPACK.EXE?raw=true
 * The Devil's Doorknob BBS Capture (1996-2003) → Dloads/OTHERUTI/NDFIX-1.ZIP → NPACK.EXE
 * An NPACK.EXE utility was included with some Symantec products, such as Norton Desktop 1.0 and 2.0 for Windows.

Sample files

 * https://telparia.com/fileFormatSamples/archive/npack/