BikeBingle was a bicycle accident tracking web-site written mid 2008, it continues to be hosted on Google's App Engine engine but recieves little usage. The source code is being posted up in this repository as open-soruce, in case it is of use.
The running site can be found here bikebingle.appspot.com.
There's a post on the background behind the development of BikeBingle on my blog.
Development
Client
The client was written using GWT, with the source code stored under src-java. The latest compiled version (Java -> JS) of this code is committed under the src/gwt directory to ease deployment. Compilation was performed with an early version of GWT.
Server
BikeBingle itself is hosted on Google App Engine, including the hosting of all static files. The Python code for the server including all web-request handlers is included in the src directory. BikeBingle runs on version 1 of the App Engine platform.
Licensing
Apache V2 (as per LICENSE file), with the exception of the GeoHash implementation (geohash.py) which was released as public domain code (see file header).