Qt based Veroboard, Perfboard, and PCB layout and routing application
Minimalistic wide-open GPS-locator/tracker
Map application using OpenStreetMap data
Track your mobile device or cellphone via internet using OpenGTS/GPRMC
Automated reporting of Geiger Muller counter readings to RadMon.org
Web based LIMS for lab animal weight and tumour growth tracking
FAA digital chart viewer for iPhone and iPad