The FSF is now distributing some of the GNU software that has been ported to MS-DOS on 3.5 inch, 1.44MB diskettes. The disks contain both source and executables.
Of course, there are deep differences between GNU and systems running OS/2 or DOS, so some of these utilities are necessarily missing features.
Information about the FSF and the GNU Project can be found via http://www.gnu.ai.mit.edu. To receive a copy of the GNU's Bulletin, send your name and address with your request to the Free Software Foundation, Inc., 675 Massachusetts Avenue, Cambridge MA 02139-3309. Enclosing a business-sized self-addressed stamped envelope ($0.52) and/or a donation of a few dollars is appreciated, but not required. If you're from outside the USA, sending a mailing label and enough International Reply Coupons for a package of about 100 grams is appreciated but not required.