efaq: Emacs for MS-DOS
8.8 Where can I get Emacs for MS-DOS?
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To build Emacs from source for MS-DOS, see the instructions in the file
‘msdos/INSTALL’ in the distribution. The DOS port builds and runs on
plain DOS, and also on all versions of MS-Windows from version 3.X
onwards, including Windows XP and Vista.
The file ‘etc/PROBLEMS’ contains some additional information
regarding Emacs under MS-DOS.
A pre-built binary distribution of the old Emacs 20 is available, as
described at
<ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/emacs.README>
For a list of other MS-DOS implementations of Emacs (and Emacs
look-alikes), consult the list of “Emacs implementations and
literature,” available at
<http://www.finseth.com/emacs.html>
Note that while many of these programs look similar to Emacs, they
often lack certain features, such as the Emacs Lisp extension language.