torlando-tech/columba
Columba is a native Android messaging and voice app that connects to the Reticulum network over Bluetooth LE, WiFi, LoRa (RNode), or TCP, letting users send LXMF messages and make LXST calls without internet, cell towers, or central servers. It offers end-to-end encryption, multiple identity management, offline maps, and NomadNet browsing in a Material Design 3 interface.
What this means for indie developers：Useful as an open-source reference for offline mesh messaging and BLE/LoRa integration, though its niche network focus limits relevance to mainstream app publishing and monetization.