Meshtastic

Meshtastic is an open-source project that aims to create a mesh communication network using off-the-shelf inexpensive radios. It allows users to communicate with each other without relying on traditional infrastructure like cell towers or Wi-Fi. The radios form a self-healing mesh network, where each node can relay messages, extending the network's range. Meshtastic supports text messaging, location sharing, and can be used for various applications such as hiking, events, or emergency communications.