Tinc Mesh VPN

Tinc mesh VPN client and user interfaceGPL-3.0-only

Serval Mesh

Peer to peer communicationsGPL-3.0-only

Meshtastic

An inexpensive open-source GPS mesh radio for hiking, skiing, flying, marching.GPL-3.0-only

Tailscale

Mesh VPN based on WireGuardBSD-3-Clause

Particle Physics Simulator

Particle Physics Simulator offers a physics sandbox with n-body capabilities wheGPL-2.0-only

DisasterRadio

GPL-3.0-only

Meshenger

Voice- and video phone App for off-the-grid scenarios.GPL-3.0-only