XDA Developers on MSN

The virtual OS museum lets you relive the glory days of Windows 3.1, DOS, PalmOS, and more

This is a real operating system blast from the past.
TechSpot

FreeDOS, now 30 years old, will soon run Windows 3.x

Prompt Forever: FreeDOS is a free operating system designed to be a competent replacement for MS-DOS and other prompt-based operating systems. The project still has to achieve perfect compatibility ...