- Semapedia.org (which we already covered in an earlier post) connects Wikipedia articles with real world locations.
- QRMap allows you to generate a code simply by dragging and dropping a placemark on a Google Map which you then email to yourself via a link on the map. While definitely clever I am not sure it is any more efficient than the method I describe in a previous post.
- QR Code Mapplet is more of a marketing tool but a cool one at that. It allows registered users to create Google Maps placemarks with embedded QR Codes for events, sales, etc. Definitely head over and check out the demo to see what is possible.
Lastly, Keir suggests Google Chart API for those of you who want to look under the hood.