Penflip - Typewrite is a real-time collaborative writing environment with Markdown support, versioning and Dropbox syncing. Alternatives to Penflip for Web, Windows, Mac, Linux, iPhone and more.
Big Huge Labs Writer - Writer is a free online distraction free writing environment provided by Big Huge Labs.
Typewrite - The California Typewriter Company provides service and sales for all makes and models of typewriters, fax machines, printers, calculators, and even word processors.
Nimble Writer - Nimble Writer is a general-purpose tool for writing stories, be it short fiction stories or even...
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Scribes - A text editor for GNOME that combines simplicity with power.