There is also the writeroom[0] and olivetti[1] modes for Emacs that focus on a distraction free writing experience.

[0]: https://github.com/joostkremers/writeroom-mode

[1]: https://github.com/rnkn/olivetti

I didn't know Olivetti minor mode and I'm loving it.

I am writing a research proposal now with Olivetti. Came back to this thread to thank you.

Also thank you to Paul Rankin for bringing back this nice focus mode of vintage computing.

I use Olivetti whenever I have a single window visible. So nice.