OsmAnd

Weblate command line client

Adaptable, fast automation for all

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

Free check-in service to log your public transit journeys

Firmware for Pinetime smartwatch written in C++ and based on FreeRTOS

The automation tower defense RTS

Catima, a Loyalty Card & Ticket Manager for Android

A simple, rational music player for android

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

The nRF Toolbox is a container app that stores your Nordic Semiconductor apps for Bluetooth Low Energy in one location.

📱 Nextcloud Android app

Main repository for GeographicLib

A Matrix collaboration client for Android.

Pure Data - a free real-time computer music system

A libre lightweight streaming front-end for Android.

All in one emulator on Android!

Vector map library and writer - running on Android and Desktop.

GPS log file viewer and analyzer with support for GPX, TCX, KML, FIT, IGC, NMEA, SLF, SML, LOC, GPI, GeoJSON and OziExplorer files.

The #1 open-source Android GNSS/GPS test program

Performance Software for Cyclists, Runners, Triathletes and Coaches

web-based thesaurus search and management

Self-hosted outdoor activity tracker 🚴

Privacy focused translator app built with MD3

A podcast manager for Android

A list of Free Software network services and web applications which can be hosted on your own servers

OwnTracks Android App

Open-source Android/Desktop remake of Civ V

OpenLayers