There's a fairly big community of offgrid devs on scuttlebutt. Which makes perfect sense, given that the whole protocol/application was written for that use case :)
Ah yes - this is in part what inspired me. I love the SSB team and what they’re doing. I’ll check out that link and maybe stop being a lurker and join in, lol.
Thanks for comment
Joey Hess comes to mind. He writes of projects in his blog, though items aren't specifically tagged.