Confounding URL typists since 2007.
Some of my more recent personal projects are focused around enhancing Rails 3:
MetaWhere – Add a dash of Arel awesomeness to your condition hashes.
Squeel – The updated rewrite of MetaWhere, with extra awesome.
MetaSearch – Extensible object-based searching for your form_for enjoyment.
attr_bucket – Your model can has a bucket (for its attributes).