Zet
From Just Solve the File Format Problem
Zet is a compressed archive utility for DOS, and its associated file format. It was developed by Oleg V. Zaimkin.
Format details
Zet files seem to contain tagged segments, each beginning with "OZ".
Identification
A possible signature is that Zet files begin with bytes 'O' 'Z' dd, and end with 'O' 'Z' de 06 68 7c.
