Roadnav

Roadnav is a GPS localization system for vehicles that tells you the route you should follow to reach a predetermined destination.

It's a very useful tool, but there are some strings attached - you need to have a computer with GPS capabilities to process the geographic information.

If you happen to have a laptop that has a GPS module, then you should absolutely give this app a try.

It has all of the typical features of any GPS navigator:

- Street-level map generation

- Real time vehicle position

- Audio telling you what route to follow

- 3D view from the driver's perspective

- And much more.

This app is sure to grow in the future, but for now you'll want to limit yourself to the United States, which is the only geographic information it includes.