OpenGTS (Open Source GPS Tracking System) is a full featured Web-based GPS tracking system for fleets of vehicles. It supports OpenLayers and other map providers, detail/summary reporting, and various GPS tracking devices.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This version now includes sortable table columns on reports and admin pages, and descriptive pushpin "labels" on group map showing last known GPS location. Example GPS Tracking device 'template' server updates were made. Miscellaneous bugs were fixed.