Columba is unclaimed —
C
Columba
Message freely. No internet required.·columba.network
Columba is an open-source Android messenger for the Reticulum network that provides encrypted, decentralized mesh messaging without requiring internet access, cell towers, or servers. It supports multiple transports including Bluetooth LE, WiFi, LoRa (via RNode), and TCP, and also offers encrypted voice calls over the mesh. Identities are cryptographic and generated on-device, with no accounts, phone numbers, or tracking involved.
What it's for
Off-grid encrypted messaging without internet or cellular serviceLong-range communication using LoRa/RNode radioLocal mesh messaging over Bluetooth or WiFiEncrypted voice calls over a mesh networkPeer-to-peer communication without central servers
Features 14
- Automatic peer discovery
- Cryptographic identity generated on-device
- Encrypted voice calls over the mesh network without SIM or phone number
- End-to-end encryption on every message
- Identity sharing via QR code
- Long-range connectivity up to 20+ km via RNode
- Messages hop across the mesh to reach destination
- Multiple transports: Bluetooth LE, WiFi, LoRa, TCP
- No accounts, no tracking, no central servers
- No Play Store account needed for installation
- Open-source and fully auditable codebase
- Uses the LXMF protocol
- Uses the Reticulum network protocol
- Works without internet, cell towers, or servers
At a glance
free tieropen source
TypeMobile app
DeploymentInstalled (local)
PlatformsAndroid
Integrations
ReticulumLXMFRNode