calibre - Ebook manager, viewer & converter
Calibre Web - Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks...
Apple Books - The all-new Apple Books has been redesigned to make finding, reading, and listening to books a beautiful, effortless experience on iPhone and iPad.
Komga - Media server for comics/mangas/BDs with API and OPDS support.
Open Library - The ultimate goal of the Open Library is to make all the published works of humankind available to...
The Book Depository - The Book Depository (Guernsey) is the UK's largest dedicated online bookseller, offering the...