Apps
Webmention Tester

Orbitals Multi-platform
Orbital mechanics simulation/animation thing.
djmodgraph
Tool for visualising relationships between Django Models. Generates an image showing how models in a project are connected via inheritance and ForeignKey(, etc) fields. #weekendproject
Arduino lightbox
django-wm
Automatic Webmention functionality for Django models
djdep
Displays dependencies between apps in your Django/python project