UI Garage - Specific mobile and web design patterns for your inspiration
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.
Muzli - UI/UX and Design Inspiration Chrome Extension
Ultimate eBook Creator - Ultimate eBook Creator is a dedicated eBook creator for creating the books for the Amazon Kindle.
Design Hunt - Curated design inspiration for everyone
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.