Traccar GPS Tracking System

• UpdatedFeb 18, 2026
• Java

The official firmware for Meshtastic, an open-source, off-grid mesh communication system.

• UpdatedFeb 20, 2026
• C++

Let's upgrade cheap off-the-shelf robotic mowers to modern, smart RTK GPS based lawn mowing robots!

• UpdatedMay 9, 2025
• C++

A GPS bicycle speedometer that supports offline maps and track recording

• UpdatedNov 8, 2025
• C

Grab cam shots & GPS location from target's phone front camera or PC webcam just sending a link.

• UpdatedApr 29, 2025
• HTML

Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.

• UpdatedJun 20, 2025
• Java

wanderer is a self-hosted trail database. Save your adventures!

• UpdatedFeb 20, 2026
• HTML

An Android app that uses your phone's sensors to assist with wilderness treks or survival situations.

• UpdatedFeb 20, 2026
• Kotlin

📡 Lightweight GPS Logging Application For Android.

• UpdatedJan 25, 2026
• Java

我的导航算法学习笔记，内容涵盖导航定位开源程序的源码解读、开源项目梳理、书籍讲义、博客翻译、教程讲座推荐；所有内容都可以随意转载，原始文件都放在这里了，大家可以在我的基础上整理出自己的一些文档。（Tips：①主要是写给初学者，已经有基础的同学应该多看论文和代码，看我的笔记学不到啥；②仓库持续更新中，不建议 fork）

• UpdatedJun 7, 2025

GNSS-SDR, an open-source software-defined GNSS receiver

• UpdatedFeb 19, 2026
• C++

Wifi & BLE driven passenger flow metering with cheap ESP32 boards

• UpdatedOct 15, 2025
• C++

Android OBD diagnostics with any ELM327 adapter

• UpdatedFeb 20, 2026
• Java

Simple Yet Powerful Geo Library for PHP

• UpdatedJan 21, 2026
• PHP

.NET Framework for Backgrounding & Device Hardware Services (iOS, Android, & Catalyst)

• UpdatedJan 18, 2026
• C#

Location, motion, and activity recording framework for iOS

• UpdatedMar 25, 2025
• Swift

Open-source GNSS + inertial navigation, sensor fusion simulator. Motion trajectory generator, sensor models, and navigation

• UpdatedNov 27, 2024
• Python

Android application for Meshtastic

• UpdatedFeb 20, 2026
• Kotlin

Repository moved to:https://codeberg.org/OpenTracksApp/OpenTracks

• UpdatedAug 24, 2025
• Java

A concise ChartPlotter/Navigator. A cross-platform ship-borne GUI application supporting * GPS/GPDS Postition Input * BSB Raster Chart Display * S57 Vector ENChart Display * AIS Input Decoding * Waypoint Autopilot Navigation

• UpdatedFeb 20, 2026
• C