As a writer, I depend heavily on Scrivener. Just as a word processor makes it possible for a writer to type his document on a sheet of virtual paper, Scrivener allows a writer to create a series of virtual index cards and type bits and pieces of his document onto them. The cards can be created, rearranged, duplicated, or deleted with point-and-drag ease.
This unique approach makes it possible for me to outline an entire document with cards, write the parts I like or feel most excited about first, and then go back and fill in the other bits. Once all my pieces are written, I can put them into any order I choose … and then generate a single, more traditional document.
Over the last several years I’ve written novels, non-fiction books, articles, and blog entries on Scrivener. I love it; I’m addicted to it.
For a basic introduction to Scrivener and some insights into how it impacts the writing process, I'd invite you to read this post over on MarkMcElroy.com.
Note from Mark: Following an uncomfortable email exchange with Scrivener's designer, I've elected to delete the rest of this post.