[3] The original founder of the company (first called "Crushproof Software") was Ian H. S. Cullimore, and the other two David Frodsham and Peter Baldwin.

[2] Cullimore was involved in designing the early Organiser products at Psion before the DIP Pocket PC project.

Built-in applications include a text editor, spreadsheet (Lotus 1-2-3 compatible), phone book and time manager.

Most text-based DOS applications can run on the Portfolio as long as they did not directly access the hardware and could fit into the small memory.

The modem is powered from the portfolio and came with an acoustic coupler consisting of two round shells that could be mounted over both ends of a handset with the aid of velcro strips.

Credits for the development of the product can be found in an easter egg if one selects Setup, then Help, and then presses Alt+[ ("Alt" plus "left square bracket").

The Atari Portfolio was used by the character John Connor to crack PINs in two scenes in the 1991 film Terminator 2: Judgment Day.