Story Stork - A simple and fun plot outline tool for fiction writers.
StoryMill - Developers and publishers of Mac, Win, and iOS productivity, home and office and writing software such as MacGourmet, Paperless and many more. Based in MN.
Start With A Story - Mini guide on opening your book with a tale
Novelize - Novelize is an online novel writing app designed to keep authors on track.
Inkvite - The social app to inspire your creative writing
Manuskript - Open-source tool for writers.