I got plan9 working on my Raspberry Pi 3B+, including wifi. I used Miller's 9pi.img. Can read webpages with webfs and abaco. Last night I got drawterm working using the instructions on SDF.
@humberto sshfs is a *nix tool 🙂 I mentioned it for when you're not using Plan 9.
You may want to check out 9front as well. It's much more developed.