Have you heard of these Open Source low-power network protocols?

Hi all! Recently I came across a few different low-power, long-range networking protocols. These are on unlicensed wavelengths, different from 3G, 4G, WiFi, etc. I was curious if anyone had worked with this before or explored them much:

I also saw this similar protocol, but… it is closed. :stuck_out_tongue_closed_eyes: