What is a website where I can download unlimited public domain eBooks or ePubs for free?

Your answer would be only one google search away.  Try Project Gutenberg.  Just click this link:  http://www.gutenberg.org

Another word for 'downloading unlimited eBooks or ePUBs free' (if you really mean 'unlimited') is 'stealing'.

Man, as an author of prose, I hate questions like this. Why should you be able to download any book for free? But yes, Project Gutenberg is a good placd to start.

http://www.epubbud.com http://www.tuebl.com All torrent sites, http://kickass.to has many epub files and you can even make requests.

The Internet Archive (http://archive.org) Open Library (https://openlibrary.org) Project Gutenberg (http://www.gutenberg.org) The Ultimate EBook Library (http://tuebl.ca/)

If you want to download 'Self-Development' & 'Entrepreneurship' related books, I would recommend http://howentrepreneur.com. You can Download many bestseller from there, without paying any penny.

Yes, http://feedbooks.com, you have tons of Public Domain ebooks nicely formatted (unlike Project Gutenberg last time I checked).

It's bad to shame someone on a question they asked.. With the reason being based on your moral beliefs.. Either answer it or don't. I hate people who go out of their way to do that. What I do is google the title of book + ePub. A good site is http://epubbud.com. They have both self-published, classic, and other titles on there. Some say TUEBL works, my friend uses it and it does, it has not worked for me however. Using http://zbigz.com (an Internet torrent downloader; without you having to download a torrent app by jailbreaking your phone), and googling the name of the book + torrent. Copy the torrent magnet link, links from http://kickass.to or katproxy work well, and download it. Once it's done caching, download the file. It works well for me. Edit: I forgot to mention openhttp://library.org, legal place to download and borrow e-books and have them all returned on time. Great site.

HiI found this very interesting app + website .Its name is bookstruck and it has loads of interesting content to read in Marathi and Hindi and other languages as well .It has books of all genres namely horror ,sci fi , fantasy and others and some of the books are great to read in free time .I have found some very interesting reads here which I was till now looking for in other apps .The best part is the variety of books that are available on this app and website never make you feel bored or  disillusioned. All those who are interested in great marathi/english/hindi reads can do so onhttp://bookstruck.in/Garima