FocusWriter - FocusWriter is a fullscreen, distraction-free word processor designed to immerse you as much as...
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
Manuskript - Open-source tool for writers.
iA Writer - Minimal Design, Maximum Focus
Byword - The easy way to write Markdown and rich text on your Mac and iDevices
bibisco - bibisco is a novel writing software.