Nazooke! Client lets people track their friends, vehicles, animals, or other things. Nazooke! Client sends the user's position in defined intervals to a remote server which will show the user's position on a map. The Nazooke! Client uses any Java GPS enabled device or any Windows Mobile 5 device. A port of this software aims to run on small specific devices that allow vehicle tracking, child tracking, or animal tracking.
OpenDMTP (Open Device Monitoring and Tracking Protocol) is a highly configurable and extensible protocol for communicating with mobile devices over high-latency/low-bandwidth networks. The protocol is particularly geared towards the transmission of GPS base location information and includes a full-featured reference implementation showcasing its capabilities.