Traccar GPS Tracking System
GPS track editor for editing tracks and planning (multiple) day tours
NMEA 0183 library for Java
Tool to work on map data, to check the data and generate your own maps
A C library for parsing/normalizing street addresses around the world
A library to generate short codes
A reference implementation of the Polish geobotanical grid
NMEA libary for java (protocol of GPS devices)
A software for processing and analyzing time series in Earth Science
Customization of OpenGTS look and feel