OpenWRT, a minimal Linux distribution for routers, has lots of useful applications, mostly in networking, of course.
I installed it on my RAVpower FileHub Plus (RP-WD03), a combined powerbank, router, and network access storage (NAS) device. It has Ethernet and USB ports built-in.
Check out my review of the RP-WD03 and demonstration of OpenWRT running on it:
Back to the Home Page!