Magnus von Koeller

counter_culture. Turbo-charged counter caches for your Rails app.

FlickrFaves. FlickrFaves is a small utility for downloading high-resultion copies of your Flickr favorites to your harddrive.

after_commit_action. Easily defer blocks of code to the after-commit action of an ActiveRecord model.

wilson_interval. Calculate Wilson confidence intervals with minimum fuss.

felon. Multi-armed-bandit testing for the rest of us.