A visualisation tool for your version control logs. The original idea is from Michael Ogawa, but I have been working on bringing it into real time using the Java Open GL bindings.
A sample video:
The maven-emacs-plugin allows you to create GNU Emacs JDEE configuration files from maven pom.xml files. This makes it very easy to work on complex Java projects from within GNU Emacs.
Worklog is a time tracking mode for GNU Emacs that I maintain. It allows developers to easily track time worked on tasks and allows for generating a summary whenever necessary.
Color Theme Arjen & Color Theme Zenburn
These are 2 color themes I maintain. They basically reconfigure your entire GNU Emacs to a color scheme defined in Emacs Lisp.