As of 2015, Podiobooks.com and LearnOutLoud.com are two websites that offer free podcasts of audio books. Whereas Podiobooks.com focuses on serialized fiction books, LearnOutLoud.com's podcasts primarily provide educational audio books.
The free audio book podcasts on Podiobooks.com are sorted by their genre, such as fantasy, thriller, and young adult. All of the podcasts are free of DRM (digital rights management) and can therefore be played without any limitations on portable devices.
LearnOutLoud.com, by contrast, is a more diverse website featuring podcasts of audio books in a variety of non-fiction genres, including college-level educational titles. LearnOutLoud.com also provides a monthly free audio book classic. Listeners can subscribe to this monthly podcast through iTunes.