NPack

File Format
Name	NPack
Ontology	Electronic File Formats Compression NPack
Released	1988

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 "MSTSM".

Software

• https://github.com/Sembiance/dexvert/blob/master/dos/NDFIX-1/NPACK.EXE?raw=true
• 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/