Scrivener - Scrivener is a content-generation tool for composing and structuring documents.

Pure Writer - fast, smooth, fluid, at any time, never lose content, Markdown, super reliable

Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.

YourQuote - YourQuote is an interactive mobile app that helps you to write stories, quotes, screenplays, poems, and books.

yWriter - Free writing software designed by the author of the Hal Spacejock and Hal Junior series. yWriter6 helps you write a book by organising chapters, scenes, characters and locations in an easy-to-use interface.

Novelist - A portable writing assistant for novelists.