For PCs, running MSDOS or OS/2, EmTeX (by Eberhard
Mattes) offers LaTeX, BibTeX, previewers, and drivers. It is
available as a series of zip archives, with documentation in both
German and English. Appropriate memory managers for using emTeX
with 386 (and better) processors and under pre-’9x Windows, are
included in the distribution. (EmTeX can
be made to operate
under Windows, but even back when it was “current”, such use wasn’t
very actively encouraged.)
A version of emTeX, packaged to use a
TDS directory structure
, is separately available as an
emTeX ‘contribution’. Note that neither emTeX itself, nor
emTeX-TDS, is maintained. Users of Microsoft operating
systems, who want an up-to-date (La)TeX system, need Win32-based
For PCs, running MSDOS, a further option is a port of the
Web2C 7.0 implementation, using the GNU djgpp
compiler. While this package is more recent than emTeX, it
nevertheless also offers a rather old instance of (La)TeX.
For PCs running OS/2, users also have the option of the
free version of the commercial VTeX
specialises in direct production of PDF from (La)TeX input.
(This version is, like the Linux version, unfortunately no longer
For VAX systems running OpenVMS, a TeX distribution
is available CTAN, but is almost certainly not the latest (it
is more than 10 years old). Whether a version is even available for
current VMS (which typically runs on Intel 64-bit processors)
is not clear, but it seems unlikely.
For the Atari ST and TT, CS-TeX is available
from CTAN; it’s offered as a set of ZOO archives.
Amiga users have the option of a full implementations of TeX 3.1
(PasTeX) and Metafont 2.7.
It’s less likely that hobbyists would be running TOPS-20
machines, but since TeX was originally written on a DEC-10
under WAITS, the TOPS-20 port is another near approach
to Knuth’s original environment. Sources are available by anonymous
This is FAQ version 3.26, released on 2013-02-25.