LibriVox is a large database of audiobooks which are completely free and in the public domain. The site's books are read by voice actor volunteers from around the world and there are more than 16,000 titles available to download.  

Overdrive works with local libraries around the country to make ebooks and audiobooks available for fast and easy download. After creating an Overdrive account, connect to your local library (assuming your library...

The Internet Archive is a nonprofit digital library that has curated and cataloged millions of books, music, software, websites, and other online media. It's perhaps best known for operating the Wayback Machine, which you can... 

LoyalBooks provides a primarily visual browsing experience so you don't have to read tedious amounts to find listening material. The LoyalBooks.com website is also screen reader friendly making its resources accessible to people with vision disabilities. 

Open Culture offers 1,000 free audiobooks for download. It's not the most elegant interface; here you'll find a list of public domain and open-source books organized with the authors in alphabetical order, from Aesop's Fables to Ludwig Wittgenstein's Tractatus Logico-Philosophicus. 

ThoughtAudio should appeal to a specific kind of reader. The catalog of books is focused on a fairly specific genre: classic literature and philosophy titles. The collection is currently just about 100 titles and some books are easily downloaded, while others feature audio embedded in a player on the webpage.  

Another robust collection of public domain literature, Lit2Go leans into education by rating all of its titles on the Flesch-Kincaid grade level scoring system. This makes it easy to filter and browse audiobooks by grade level, from kindergarten through 12th grade.