A GPS bicycle speedometer that supports offline maps and track recording

Traccar GPS Tracking System

High-precision indoor positioning framework, version 3.

An open source bike computer based on Raspberry Pi Zero (W, WH, 2W) with GPS and ANT+. Including offline map and navigation.

Traccar GPS Tracking System

Traccar Client for Android

Mad Location Manager is a library for GPS and Accelerometer data "fusion" with Kalman filter

GPSBabel: convert, manipulate, and transfer data from GPS programs or GPS receivers. Open Source and supported on MacOS, Windows, Linux, and more. Pointy clicky GUI or a command line version...

... the open-source glide computer

HCKalmanFilter is Swift implementation of Kalman filter algorithm intended to solve problem with GPS tracking

Traccar Manager for Android

A NMEA parser and GPS utility library

Traccar Client for iOS

Command line program to print location information from CoreLocation

Traccar Manager for iOS

GPS tracking system based on .NET and React.

Track Animation is a Python 2 and 3 library that provides an easy and user-adjustable way of creating visualizations from GPS data.

DVD files for "A Software-Defined GPS and Galileo Receiver: A Single-Frequency Approach"

End-To-End Encrypted GPS Tracking Service

STM32 HAL library for GPS module NEO-6M