I recently stumbled across this superb little word processor, and I’m just blown away by how good it for being made by one dude for free. It’s like a slimmed down version of Scrivener or Papyrus, with a wonderfully simple and easy to use interface.
It’s open-source, and works on all platforms (Windows, Mac, Linux, including phones and tablets). This lady here does an excellent overview of its features.
If you’re looking for a nice little app for writing, outlining, or planning something, I’d recommend giving it a look.
Works fine in firefox for me. And interestingly, the pwa features still work even though firefox doesn’t have first class support for it, meaning you can even access this “website” fully offline after you visit it once.