Conservify FieldKitFieldKit is an affordable, open-source platform for field and environmental sensing featuring a science-grade data logger, mobile app, modular sensors, and a free cloud data portal.(0)0
XCSoarXCSoar is a free, open-source tactical glide computer for glider and paraglider pilots, featuring moving maps, thermal assistance, FLARM, task planning, and weather integration on Android, iOS, Windows, and Linux.(0)0
VeetrVeetr is a free, open-source sailing instrument system using ESP32 hardware. Monitor real-time wind speed, direction, GPS, and heel angle on any device via a Progressive Web App. DIY build for ~$250.(0)0
Train DriverTrain Driver is a free, open-source WiFi throttle app for controlling model railroad layouts using DCC-EX EX-CommandStation. Supports Arduino, ESP32, Bluetooth, and more.(0)0
QGroundControlQGroundControl is a free, open-source GCS for MAVLink drones. Full flight control, mission planning, and real-time telemetry for PX4 and ArduPilot vehicles on Windows, macOS, Linux, iOS, and Android.(0)0
OpenTreeMapOpenTreeMap is an open-source collaborative platform for urban tree inventory, ecosystem services calculations, and community engagement. Map and manage your city's urban forest.(0)0
OpenCPNOpenCPN is a free, open-source marine chartplotter and GPS navigation app for Windows, Mac, Linux, Raspberry Pi, and Android. Chart courses and track your position at sea.(0)0
Plant-itPlant-it is a free, open source Android gardening app for logging plant care activities, uploading plant photos, and setting watering reminders. Self-hostable and privacy-first.(0)0
LichessPlay chess online for free with no ads or registration. Lichess offers AI opponents, tournaments, puzzles, game analysis, and learning tools — fully open source.(0)0
HelioHelio is a libre, cross-platform music sequencer with a distraction-free UI, VST/AU plugin support, microtonal temperaments, and MIDI/WAV/FLAC export.(0)0
