My Weekend Project: Download Wikimapia to your GPS
motomapia.com
motomapia.com
I needed this for an upcoming motorcycle trip and I needed a sample application for one of my opensource libraries. The code is all right here:
https://github.com/stickfigure/motomapia
It runs on Google App Engine (Java). The frontend is a Google Maps mashup built with CoffeeScript (my first CoffeeScript project). The backend uses geohash indexing and provides a basic demonstration of how to use http://objectify-appengine.googlecode.com/
It took about 1.5 days, but I was able to recycle a lot of code from an earlier project (http://www.mobca.st/).
Enjoy!