Meshtastic

Meshtastic is an off grid communication app that pairs with long range radios to deliver text messaging and GPS location sharing without cellular or internet service. Build a private mesh chat for your group, see teammates on a live map, and stay connected during hikes, festivals, travel, and emergency response. Core features include offline group and direct messaging over a mesh network, real time location sharing with map view, and simple Bluetooth pairing with easy channel management. Benefits include reliable long range coverage, low power use, privacy friendly group channels, and an open source community. Keywords include offline messenger, mesh chat, GPS location sharing, emergency communication, Bluetooth radio, open source.