Dark Room is a free, full screen and writing environment Dark Room is a FREE, full screen and writing environment. Unlike standard word processors that focus on features, Dark Room is just about you and your text.
Basically, Dark Room is a clone of the original WriteRoom that is an OS X (tiger) exclusive application. It is a child of necessity, as there were no viable alternatives in Windows to produce the same behavior. Sure, you can kind of emulate the behavior by jumping through a bunch of hoops in Word/Writer, but it isn't the same. Also, you can do something similar in emacs, but who wants to learn a bunch of obscure keyboard shortcuts?
The goal of the project is to capture the essence of WriteRoom, while keeping it simple and just as free.