EE-OS

System Process 1.0 - 1982
First version released Applications: Calculator, Textmate, List.

EE-OS System 4.2 - 1989
This name changed from System Process to EE-OS System. Applications: Manager, Calculator, Paintbrush, Textmate, Games, Reminders' List.

EE-OS I1 - 2010
The first version of EE-OS I is only available to have Intel Core IA-32 and x86-64 PCs. Released Q4 2010.