Byword - The easy way to write Markdown and rich text on your Mac and iDevices
WriteNext - The writing application that boosts your writing. Increase focus and writing performance and reduce distractions by separating your creative writing from other activities. Let writing be the only activity you perform in the writing application.
FocusWriter - FocusWriter is a fullscreen, distraction-free word processor designed to immerse you as much as...
Writebox - Writebox is a simple and distraction-free text editor for Chrome and iPhone/iPad.
iA Writer - Minimal Design, Maximum Focus
Calmly Writer - Distraction-free text editor for Mac, Windows, Linux and ChromeOS.