DocScript is an approach to document preparation. It presents tools and utilities to edit and publish documents. The philosophy behind the DocScript project is to utilize the programming tools you're working with anyway in your daily work.
transfer xml into specific text-formats (html, dot, source-code, ...)
Moritz is an "addon" to the well known tool doxygen. It generates nassi shneiderman diagramms of functions and methods in a c/c++ source as html-files, which could be included in a software-dokumentaion or simple whached by using a html-browser.
cEdit is an advanced and free alternative to both common text editors, and IDE's. It has many of the features found in shareware editors, including extensive language support, function listing, built in FTP, projects, and docking support.