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.
CACHICHOT (Cheap Ass Check In Check Out Tool) is a PHP/MySQL utility to track items such as Games, DVDs, etc. This can be used to track lending of games, etc. in a home environment or track assets in a business environment.