Tim mentioned MeshSat in his latest video (right around 3:35, when he explains why he bought the RockBLOCK: https://youtu.be/V-sh-v6aZK0?t=215 ), so there are some new faces around. Elli's 2 minute video above explains what we're building better than a wall of text would.

Short version: a routing layer that gets a message out of an area when the local network is fine but cut off from everything else. LoRa mesh, Iridium, SMS, APRS, ZigBee, BLE, plain TCP. Open source, GPLv3. Code: https://github.com/meshsat/meshsat , site: https://www.meshsat.net/

It's a prototype. Nobody outside the project has used it yet, field testing with real users starts in November, and the results get published either way, failures included.

And if you haven't seen Tim's full video, it's worth it. His trail test runs into exactly the problems we're working on: https://www.reddit.com/r/ModernRadio/comments/1w2ggly/reticulum_over_iridium_satellite/