Library for OpenStreetMap offline rendering and routing
libosmscout offers applications simple, high-level interfaces to offline rendering and routing functionalities based on OpenStreetMap data. It does so by preprocessing *.osm data files and generating binary data and index files for fast access.
Lets you monitor your GPS-phone. You have full control of your own data. Both client software (for phones) and server software is free open source, so you might set up your own server or use the default one at opengeotracker.org