Not had too much time to try it so far, but UBPorts is pretty nice. The UI and the web browser are impressive. It's a bit locked down out of the box though, I'd like to be able to install normal packages without jumping through hoops.
#Mobian is closer to what I want from "Linux on mobile". The UI is a bit choppy compared to Ubuntu Touch, but having full access to ARM Debian packages is great
Mastodon server focused on game development and related topics.