Emacs Lisp TeX
You have found the way to TeX on Emacs Lisp:
See also:
AUC TeX - A package that supports writing and formatting TeX files. Many different macro packages are supported, including AMS TeX, LaTeX, and TeXinfo.
AUCTeX: Preview-Latex - An attempt to embed LaTeX environments such as display math or figures into the source buffers. Provides the manual, mailing list, screenshots and download.
CDLaTeX - A package giving more LaTeX functionality for Emacs and XEmacs. It re-implements many features also found in AUCTeX.
Emacs ConTeXt mode - Expands tex-mode with ConTeXt awareness. Created by Berend de Boer.
The Hyperlatex package - Makes it possible to write a document both for printout and web viewing. Documentation, FAQ and download. Program is written in GNU Emacs Lisp.
Imaxima and Imath for Emacs - Downloads and documentation of a graphical user interface front-end for the computer algebra system Maxima. Imaxima processes the output from Maxima with LaTeX to render the mathematical formula.
ITe - Authoring tool for LaTeX and TeX documents written in Elisp with a gallery of examples and an online manual.
John Palmieri: Computer programs - A collection of Emacs packages including Ultra-TeX, a major mode for typing TeX documents, LaTeX symbols and Lightning/Highlighting completion.
Nevin Kapur: Hacks - A collection of Emacs packages that include bibfind.el and msn.el for searching the Mathematics ArXive and MathSciNet, and prosper.el for Prosper support in AUCTeX.
P.S. Galbraith: Emacs packages - font-latex, bib-cite, hilit-LaTeX, latex-units and other non TeX-related packages.
RefTeX - A package that provides distinct support for doing labels, references and citations in LaTeX for both Emacs and XEmacs. It runs as a minor mode with any LaTeX major mode, most notably AUCTeX. Bundled and preinstalled with Emacs since version 20.2, or download from this site.
Triet Hoai Lai: Emacs - latex-doc, latex-toolbar, ltxsymb and pifont for Pifont support in AucTeX.
WhizzyTeX - Emacs minor mode and a shell-script deamon for incrementally previewing TeX files using either ghostscript-based or dvi-based previewers. Download and documentation.
XEmacs: Lisp Code - TeX Letter - Simple LaTeX templates for letters.
X-Symbol - Overview of a package providing some semi-WYSIWYG in LaTeX or HTML source. Beyond that there are a description of the details, a manual and links to the project pages on sourceforge.
YaTeX - Yet Another TeX mode for Emacs - A package that supports composing LaTeX source on Emacs/Mule/XEmacs. An HTML editing mode is also included. Help build the largest human-edited directory on the web.