11 sites in FreeDOS
FreeDOS
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Complete, free, MS-DOS compatible operating system with no enhancements or advanced features such as multitasking, protected mode operation, GUI.
http://www.freedos.org/
FreeDOS 32
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To extend abilities of FreeDOS into native 32-bit system, based on simple, fully expandable, modular core; features like memory protection, multitasking, support for many filesystems can be added by external components. [Open Source, GPL]
http://freedos-32.sourceforge.net/
See also
The category FreeDOS in other languages