Scrivener is a powerful content-generation tool for writers that allows you to concentrate on composing and structuring long and difficult documents. While it gives you complete control of the formatting, its focus is on helping you get to the end of that awkward first draft.
Special Trial Version
Scrivener’s trial normally runs for thirty days of use, but so that you can start using Scrivener before NaNoWriMo begins without worrying about the trial expiring part-way through November, the special NaNo trial available on this page will run from the moment you start using it all the way up until 7th December. So you can download it, get used to its features, use it for your writing throughout November. There are special offers to buy Scrivener at a discounted price.
No better accelerant than Nano plus Scrivener.