Organic Maps is a free Android & iOS offline maps app for travelers
A high-performance, feature-packed library for all your mapping needs
Traccar GPS Tracking System
Lightweight GPS Logging Application For Android
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
Create, edit view GPX tracks (in the background - online maps)
A Matlab software to estimate Euler pole parameters
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
Simple GPS tracking server
Show your position live on the web using your phone as a tracker
eGPXviewer is a 3D GPX track viewer
A library to generate short codes
Java Library for working with gpx files
Combines the high accuracy of AR with the scale of GPS data