Project Gutenberg is a library of over 60,000 free eBooks. Choose between free epub and Kindle eBooks and download or read them online. You will find the world’s great literature here, focusing on older works for which U.S. copyright has expired. Thousands of volunteers digitized and diligently proofread the eBooks for you to enjoy.

Feedbooks allows those that sign up for an account to download many free e-books — from Heart of Darkness by Joseph Conrad to The Scarlet Plague by Jack London — that have become accessible via the public domain and therefore cost you nothing to access. Make sure that when you're on Feedbooks' site, you head to the "Public Domain" tab to avoid its collections of "premium" books only available for purchase.

LibriVox is home to thousands of free audiobooks, including classics, out-of-print books, and historical texts, like all of the State of the Union Addresses by United States Presidents.

Internet Archive is a non-profit library of millions of free books, movies, software, music, and websites.

The Open Library has more than one million free e-books available. This library catalog is an open online project of the Internet Archive. It allows users to contribute books, which allows for its fascinating selection of everything from Ronald Dahl to John Grisham. You can easily search by title, author, and subject.