Kobo (eBook store and readers)β β β β βA solid alternative to Kindle, from the eBook selection through apps and hardware.
Project Gutenbergβ β β β β Predating the web itself, theyβve put together tens of thousands of ebooks from classics and other public domain sources in multiple formats from plaintext to ePub.
Standard Ebooksβ β β β β Great source of classics and other public domain material, formatted and edited for maximum readability and compatibility.