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 release adds a new GPS map pushpin "Replay" option to allow point by point playback of a vehicle's travel. "Update Map" and "Auto Update" buttons can now be accessible on the map page at the same time. The maximum Geofence size has been increased to 30000 meters.