Calmly Writer is described as 'Professional text editor designed to focus on what you want to tell, with a simple, unobtrusive and distraction-free user interface' and is a Word Processor in the office & productivity category. There are more than 25 alternatives to Calmly Writer for a variety of platforms, including Mac, Windows, Linux, Web-based and iPhone apps. The best Calmly Writer alternative is Typora. It's not free, so if you're looking for a free alternative, you could try FocusWriter or Dendron. Other great apps like Calmly Writer are Bear, iA Writer, Ulysses and Ferrite.