GPS Tracker allows someone to track a GPS enabled cell phone using Google Maps. The project was tested with a Motorola i355 cell phone on the Sprint/Nextel network. You need to have a data plan with the cell phone provider so that you can make updates to your Web site from the cell phone. There are two projects available. The first project is built with PHP and MySQL. The second project is built with .NET and Microsoft SQL Server. Both projects use Java (J2ME) on the cell phone.