Scrivener is an integrated writing, outlining and research app that is tailor made for long writing projects. Since its launch in 2007 it has become the go-to for writers of all types. The project outline makes it easy to get an overview of your work and flip between sections. You can also split the screen and refer to research alongside your writing and drag and drop to rearrange your work. Write in any order, in sections as large or small as you like, and let Scrivener stitch it all together before submitting or publishing. However you write or whatever you're writing, Scrivener contains everything you need to get writing and keep writing. Scrivener is available for Mac, Windows and iPhone.