OOP
From Just Solve the File Format Problem
OOP is a menu-driven compressed archiving utility for DOS, developed by Tony M. Brown / TonyTown Software Ltd.
OOP seems to be based on AMG, with various cosmetic changes. Its native .OOP file format is most likely identical to .AMG format.
Software
- OOP v2.3
- AMG - Refer to AMG (compressed archive)#Software