Curmudgeonly Software aims to contribute to the open source community.

A Tetravex clone implmented in Perl with SDL.
Trac Whiteboard Plugin
Provides a Kanban-style whiteboard interface to Trac search results. Supports dragging-and-dropping tickets and saving changes.
Trac Batch Modification Plugin
Adds the ability to modify a batch of tickets at once to Trac.
Provides a Python wrapper to the JSON API.