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
GPS navigation software for Windows Mobile & WinCE devices.
Open source system for GPS tracking devices
Minimalistic wide-open GPS-locator/tracker
NMEA 0183 library for Java
An interactive tool for GNSS position time series analysis
A Matlab software to estimate Euler pole parameters
Create, edit view GPX tracks (in the background - online maps)
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
Simple GPS tracking server
eGPXviewer is a 3D GPX track viewer
Build your own GPS unit
Java Library for working with gpx files
A library to generate short codes
A reference implementation of the Polish geobotanical grid
Android Phone app that sends your GPS location in a SMS to a recipient
GPS mapping and management software