Traccar GPS Tracking System
Accurately Locate Smartphones using Social Engineering
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
Build your own GPS unit
Transport coordinate between earth(WGS-84) and mars in china(GCJ-02)
Simple GPS tracking server
A Matlab software to estimate Euler pole parameters
An interactive tool for GNSS position time series analysis
Open source system for GPS tracking devices
Create, edit view GPX tracks (in the background - online maps)
Minimalistic wide-open GPS-locator/tracker
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
Plugins for OpenCPN
A C library for parsing/normalizing street addresses around the world
eGPXviewer is a 3D GPX track viewer
Java Library for working with gpx files
Combines the high accuracy of AR with the scale of GPS data
A library to generate short codes
A reference implementation of the Polish geobotanical grid
GPS mapping and management software