a free and open map of wireless communicating objects
openBmap collects data and provides open maps and statistics of all communicating objects: cellular antennas, wifi hotspots.
All softwares from back-end to client are open-source under AGPL v3 license.
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