METAGRAF is a graphical editor for creating figures in MetaPost. It is currently able to draw any kind of figure in b/w or color. METAGRAF outputs a MetaPost file which can then be run through MetaPost by itself or using TeX. The program is written in Java and is thus platform-independent.
The Project Gutenberg Markup Tool is a command-line tool with a GUI front-end that automatically creates an HTML or LaTeX file from a Project Gutenberg etext. The aim is to provide publication-quality formatted etexts, without manual markup, in conjunction with post-processing by other pre-existing tools. It is tailored specifically to Project Gutenberg etexts, but can in some cases be used for other plain-ASCII etexts.