Storybook is novel-writing software which helps authors keep an overview of multiple plot lines while writing books, novels, or other written works. It assists you in structuring your book. It lets you store all the information about your characters and locations in one place, then use the included Storybook features for managing chapters, scenes, characters and locations, items, and tags. A simple interface is provided to enable you to assign your defined characters, locations, items, and tags to each scene and to keep an overview of your work with user-friendly chart tools. With the Memoria Tool, each object can be followed in dependence on time.
Many improvements and some new features.
URL: Storybook - Open Source Novel Writing Software