Its specified in the alt of the image ;)
it's https://sim-mesh.net/ just freshly released, (vibe-)coded by 2 of the people who frequently attend the #Berlin #Reticulum meetup.
It uses real code of ESP32, nRF52 and reticulum stacks in VMs, simulated the airwaves propagation using the ITU model and geodata including lidar elevation.
Nodes are added with specific positions, elevation, antennae (from a list of pre-defined ones, or that can be user-defined)
It then run tests when all this is programmed to act together in various ways.
Pretty badass if you ask me! ;)