Yes, that’s RISC OS. For a great GUI experience, that’s it for sure. It runs smoothly on my RPi Zero and serves its purpose.
I set it up to access my alpine server via Nettle and edit/share files via vsftpd and the !FTPc client – which makes the whole proccess of updating my page super easy by just drag-n-dropping files. Then I keep connected via ssh to push git changes and publish the page.
So, writing and coding can be all done via !StrongED – (I’m not sure why Nano didn’t work well via Nettle but there’s still vi for simple things)
There’s wifi support for RPi, and although it works, I just found using cable is a lot faster – since it’s all on my desk anyway.