GeoServer repository
Mybatis common mapper, easy to use
Traccar GPS Tracking System
Toolkit for working with and mapping geospatial data
GPS track editor for editing tracks and planning (multiple) day tours
Automated detection of the unknown early map projection
Open source system for GPS tracking devices
NMEA 0183 library for Java
Tool to work on map data, to check the data and generate your own maps
A library to generate short codes
a space-time interpolation geostatistical tool
Mobile implementation of HMA standardised EO data sources
GeoData Web Editing [core SIG Web]
NMEA libary for java (protocol of GPS devices)