Atavist - Atavist provides a suite of publishing tools to tell stories and build websites.
Lex - Lex is a P2P progress update platform that lets you send, save, and read progress updates.
Ultimate eBook Creator - Ultimate eBook Creator is a dedicated eBook creator for creating the books for the Amazon Kindle.
Mobipocket eBook Creator - Mobipocket eBook Creator is one of the easiest way to create a professional level of eBooks by simply providing some HTML and image files to your publication.
Descript - Text-based audio editor and automated transcription
iBooks Author - iBooks Author, free from the Mac App store, allows you to create beautiful Multi-Touch textbooks — and just about any other kind of book.