Software Developed by Ralf Schlatterbeck
Web-based time tracking tool, issue tracker and user management based on the Roundup issue tracker ...
Sudoku Maker is a generator for Sudoku number puzzles. It uses a genetic algorithm internally, so it can serve as an introduction to genetic algorithms. The generated Sudokus are usually very hard to solve -- good for getting rid of a Sudoku addiction.
Small Python library with various things such as Configuration file parsing (in Python syntax), HTML and PDF parsing. Used in others of my projects.
Non-interactive rendering of Gantt Charts for project management. Also does the scheduling. Several output formats.