GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Lulu - Whether you're a teacher, photographer or hobbyist, share your expertise. Create & self publish your book today!
MkDocs - Project documentation with Markdown.
Blurb - Create and self-publish books, magazines & ebooks
Docusaurus - Easy to maintain open source documentation websites
IngramSpark - IngramSpark is an Online publishing services provider platform that allows you to publish or print books that are in high quality, and its global distribution service enables you to post and share around the globe.