oStorybook is described as 'free, open source novel-writing software for creative writers, novelists and authors which will help you to keep an overview of multiple plot-lines while writing texts'. There are more than 25 alternatives to oStorybook for a variety of platforms, including Windows, Mac, Online / Web-based, Linux and iPad. The best alternative is Manuskript, which is both free and Open Source. Other great apps like oStorybook are Scrivener (Paid), bibisco (Freemium, Open Source), Hemingway Editor (Paid) and Gingko (Freemium).
Manuskript is an open-source tool for writers, with outliner, character management, plot development, distraction-free editor, etc. Outliner Organize your thoughts and snippets in a hierarchical manner. Organize them as you wish, reorganize them on the go.
Write and organize your ideas in Gingko tree documents. Whether building a business or writing a bestseller, Gingko lets your ideas flow naturally into place. Write, brainstorm, and organize your document, all in the same flow.
yWriter is a writing tool that uses "scenes" as a unit of text and allows you to associate that text with all manner of story elements (characters, locations, items) as well as place it and rearrange it within the context of chapters.
Looking for a suite of tools for writing your book? This is not just a text editor it does so much more. Organise your story using timelines, planning boards and the snowflake tool, all integrated to make writing intuitive and fun.
Typely is precise. Existing tools for improving prose raise so many false alarms that their advice cannot be trusted. Instead, the writer must carefully consider whether to accept or reject each change.