Amazon Kindle - Offers top free books for download.

Authorama - Authorama offers a good selection of free books from a variety of authors, both current and classic. They're organized alphabetically by the author’s last name and are written in HTML and XHTML, which means they're in an easily readable format. Most books here are featured in English, but there are quite a few German language texts as well.

CPI Digital - Access dozens of eBooks through your browser, phone, or tablet.  Use this access document to login.

eGo eBook Platform - eGo is the Connecticut State Library's statewide library eBook platform.  You can check out eBooks from any participating public library in Connecticut.

Gale eBook Collection - Check out our collection of Gale Non-Fiction eBooks.

Google  Books - Search the world's most comprehensive index of full-text books.

Google Play - Search a collection of free eBooks located on the Google Play platform.

InfoBase eBook Collection - Thousands of eBooks on such topics as Animals & Nature, Current Issues, Geography & Culture, Literature, Multicultural Studies, Politics & Government, Science & Technology, The Arts, United States History, World History.  Use this access document to login.

Internet Archive - If you're looking for out-of-print books in different languages and formats, check out this non-profit digital library. The Internet Archive is a great go-to if you want access to historical and academic books. Internet Archive offers more than 15,000,000 freely downloadable books and texts.

Libby - Access eBooks from your local library using the Libby app!

LibriVox - LibriVox is home to thousands of free audiobooks, including classics and out-of-print books.  Audiobooks are available in multiple languages. Large collection of children's audiobooks.

Many Books - ManyBooks is one of the best resources on the web for free books in a variety of download formats. There are hundreds of titles here in all sorts of interesting genres and they're completely free. Not all of the books are classics, so if you're into other genres, this site is a good alternative to others in this list. Unlike some sites, this one lets you browse free books by language. You can also search by author and genre. The ManyBooks Articles page is another handy way to browse their collection, with articles such as "Books Like Hatchet" and book reviews.With more than These books are compatible for Kindles, iPads and most e-readers.

Online Books Page - The Online Books Page, maintained by the University of Pennsylvania, lists over three million free books available for download in dozens of different formats. The site itself is pretty boring, but the long list of titles might make you a repeat visitor.

Open Library - The Open Library has more than one million free e-books available. This library catalog is an open online project of Internet Archive, and allows users to contribute books. You can easily search by the title, author, and subject.

PDF Books World - Thanks to public domain, you can access PDF versions of all the classics you've always wanted to read in PDF Books World's enormous digital library. Literature, plays, poetry, and non-fiction texts are all available for you to download at your leisure. Downloading books requires a free account login. Then, you're then given several download options, such as EPUB, MOBI, PDF, FB2, RTF, HTML, and more. They're also readable online through the site's built-in book reader.

Project Gutenberg - Project Gutenberg is a library of over 60,000 free eBooks. Choose among free epub and Kindle eBooks, download them or read them online. You will find the world's great literature here, with focus on older works for which U.S. copyright has expired. Thousands of volunteers digitized and diligently proofread the eBooks, for enjoyment and education.