pyWeb is a Literate Programming tool that will work with any markup language and any programming langauge. The idea is to allow you to create great documentation with as constraints or limitations.
Jollpi is a simple but usefull text editor. One of Jollpi's main features is the colorized syntax, customized for many different programminglanguage such as: C/C++, Java, Python, Perl, Bash, etc.
A compiler wrapper and a set of editor plugins allowing you to easily use Greek letters, accents, and other Unicode symbols in any programminglanguage.
SilverCity is a lexing package, based on Scintilla, that can provide lexical analysis for over 20 programming and markup langauges. Scripting language bindings currently exist for Python.
CUTE is a Qt and Scintilla based programmers text editor. It can be extended and customized using the python programminglanguage and is available on linux/unix. The editor supports syntax highlighting for many languages, tags files and projects.