If you're looking for a tool to create an outline and manuscript, First Book ai could be the ticket. This writing tool uses AI to lead you through the entire book writing process, from outlining to manuscript. With a variety of tools, including a free AI book outline builder and an AI book builder that turns outlines into manuscripts, it can help you flesh out your ideas and get your book written.
Another good option is LivingWriter. This tool is designed to help you organize and structure your manuscript. It's got a drag-and-drop interface for arranging chapters, an AI Outline Generator for building book structures based on famous narrative frameworks, and smart text and auto-suggest features. It works on multiple platforms and has export options and integration with Google Drive and Dropbox.
If you want a more complete writing environment, check out Novelcrafter. This tool offers a full writing suite with a personal Wiki for storing story details, multiple writing modes and AI-powered tools to help you along the way. It's good for both disciplined planners and seat-of-the-pants writers, with a variety of features to accommodate different styles.
Last, BookAIWriter is a tool that automates the book creation process, helping you turn plot outlines into book covers. It can generate AI writing and let you customize writing styles, so it's a good option for writers of all skill levels who need to quickly turn their ideas into finished books.