[Emacs 20.6][1]
Macintosh version of GNU Emacs. (18.18 Mb).

[GNU Fonts][2]
Fonts for all European, Asian and Misc languages. (190 kb).

GNU Emacs is an extensible, customizable text editor?and more. At its
core is an interpreter for Emacs Lisp, a dialect of the Lisp
programming language with extensions to support text editing. The
features of GNU Emacs include:

 * Content-sensitive editing modes, including syntax coloring, for a
   variety of file types including plain text, source code, and HTML.
 * Complete built-in documentation, including a tutorial for new
   users.
 * Full Unicode support for nearly all human languages and their
   scripts.
 * Highly customizable, using Emacs Lisp code or a graphical
   interface.
 * A large number of extensions that add other functionality,
   including a project planner, mail and news reader, debugger
   interface, calendar, and more. Many of these extensions are
   distributed with GNU Emacs; others are available separately.

Available separately: Emacs [18.59][3] and [21.3.50][4]

MORE:
<http://en.wikipedia.org/wiki/Emacs>
<http://www.gnu.org/software/emacs/>
<http://www2.lib.uchicago.edu/keith/tcl-course/emacs-tutorial.html>

Added:
#1: tidy.el.hqx.sit -(2001) -Interface to Dave Raggett's the HTML Tidy
program (package only tested on GNU Emacs 20.7.1 under Solaris 2.8) It
might work on 20.6 too.
#2: tidy.el.PDF (Only for quick read access)

Compatibility
Architecture: PPC

PPC. Mac OS 8 or 9

  [1]: http://www.mediafire.com/?8tgwhc0qpcz5wce
  [2]: http://www.mediafire.com/?nbmt8487nq83we6
  [3]: http://macintoshgarden.org/apps/emacs-1859-mac-emacs-117
  [4]: http://macintoshgarden.org/apps/emacs-21350