Although there are many other free-distraction tools, we believe WriteNext differentiates from them. Our main focus is to help you write more often and better by creating a writing habit. It is not enough to have a distraction-free tool if you don't return to write there daily.
Okay but when I go to the homepage, don't you think it's kind of ironic that it talks all about the achievements and badges that you can earn, then claims to be "no distractions"?
https://draftin.com/ https://write.as/
For distraction free writing. The latter actually hooks up to a blogging platform if you're so inclined. The former doesn't so, like the top thread on this post talks about, I've used it for saving all kinds of random snippets of thoughts and song lyrics and whatever.