PressBooks Book Writing

Pressbooks is easy-to-use book writing software that lets you create a book in all the formats you need to publish. Pressbooks delivers print-ready files for CreateSpace, IngramSpark and Lightning Source, as well as ebook files optimized to look great in all ebook stores: Amazon Kindle, Apple iBooks, Nook, Kobo, Google Play and more.

https://pressbooks.com/