For the past few months I have been developing this Geocoding engine. It started out as a small Python module to parse out and cleanse address data. The project eventually grew from an address parser to a geocoder.
Currently, the geocoder supports only single addresses[aka no intersections]. There is a lot of work to do so please feel free to help out! Here is the link to the git hub: https://github.com/taurenk/PinPointGeocoder
I threw together a very crude demo [I mean VERY crude], which only works for New York addresses: www.pinpointgeocoder.com
This is my first time releasing any code, so please email me if you have any suggestions/tip/advice at tauren.kristich@gmail.com