Recommendation from a four-time NaNoWriMo survivor:
Ommwriter for Mac, PC and IPad offers a variety of backgrounds and tranquil music with free and premium versions.
A wise man once said: "We are all at the mercy of our wild monkey minds. Incessantly swinging from branch to branch." With multiple windows and applications all vying for our attention, we have sadly adapted to the working habits of the computer, and not the other way around.Other options include:
FocusWriter for PC, Mac and Linux, it's free, customizable, has word count and other features.
WriteMonkey for PC, it's free, called a 'zen text editor.'
Write Room, for Mac only, including IPad. They note 'full screen is your holy grail.' No free version.
For bloggers who use WordPress, there is a distraction free format with support, here.
Have you found your sanctuary for distraction-free writing?