Project GutenbergFree: All time

In the spirit of saving money and living green, if you ever wish to finally read those masterpieces that you missed in school, head to Project Gutenberg. Project Gutenberg is a volunteer effort to digitize and distribute free eBooks. Most of the items in its collection are the full texts of public domain books, boasting a library of some 42,000 items. The releases are available in plain text, HTML, PDF, EPUB, MOBI, etc. If you’re more a listener that a reader, visit LibriVox instead for free audibooks.

Website: www.gutenberg.org

Photo credit: Johannes Jansson