Traccar GPS Tracking System
GPS log file viewer and analyzer
Viking is a free/open source program to manage GPS data
GPS track editor for editing tracks and planning (multiple) day tours
Open source system for GPS tracking devices
A Matlab software to estimate Euler pole parameters
Minimalistic wide-open GPS-locator/tracker
Create, edit view GPX tracks (in the background - online maps)
NMEA 0183 library for Java
Advanced mission simulation and analysis tool
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
Plugins for OpenCPN
eGPXviewer is a 3D GPX track viewer
A library to generate short codes
Java Library for working with gpx files
A reference implementation of the Polish geobotanical grid
GPS mapping and management software
Trasforma coordinate da epsg per google maps
Open Source Marine Chart Plotting Program
Navigation and transit.