LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM), and not simply their appearance (WYSIWYG).
LyX combines the power and flexibility of TeX/LaTeX with the ease of use of a graphical interface. This results in world-class support for creation of mathematical content (via a fully integrated equation editor) and structured documents like academic articles, theses, and books. In addition, staples of scientific authoring such as reference list and index creation come standard. But you can also use LyX to create a letter or a novel or a theatre play or film script. A broad array of ready, well-designed document layouts are built in.
LaTeXDraw is a free PSTricks code generator or PSTricks editor for LateX distributed under the GNU GPL. LaTeXDraw is developed in java, so it's independent of the OS. It's available in English, in Spanish and in French.
Vim reStructured Text
Author: Mikolaj Machowski
Title: Vim reStructured Text - HTML and LaTeX output
Keywords: Vim, LaTeX, PDF, HTML, XML
Version: 1.4
License: GPL v. 2
Date: 4 Nov 2006
For a long time Vim users were asking for "real" export to HTML. This is, I believe, first real try to achieve this effect. This is Vim version of reStructuredText, popular Python language documentation tool (so I borrowed parts of its documentation).
LaTeX Editor, called later LEd, is a free environment for rapid TeX and LaTeX document development. LaTeX Editor is designed to work on Windows® 95/98/Me/NT4/2000/XP/2003 operating systems. LEd's capabilities vary according to the operating system use
TeXnicCenter is a feature rich integrated development environment (IDE) for developing LaTeX-documents on Microsoft Windows (Windows 9x/ME, NT/2000/XP) freely available under GPL.