- Project Gutenberg. Project Gutenberg offers more than 57,000 free eBooks from the public domain. ...
- Open Library. ...
- Google eBookstore. ...
- Amazon Free Kindle Books. ...
- Internet Archive. ...
- ManyBooks. ...
- BookBoon. ...
- LibGen/Library Genesis.
Is downloading books for free illegal?
Yes, it is illegal to download ("make copies") of material that is protected by copyright. However, all that is illegal is not criminal. Copyright for the most part is a civil statute, with civil remedies (i.e. the copyright holder sues you for money).