Project Gutenberg -- Free books in the US because the copyright has expired. They may not be copyright-free in other countries. Readers outside of the US must check the copyright laws of their countries before downloading or redistributing our ebooks.

Free eBooks -- Free books or upgraded membership. Content contains more obscure titles and self published titles for those wanting something that is not mainstream.

iBooks  -- Application for Apple's iPad, iPod Touch, and iPhone.  iBooks includes the iBookstore. Tap the iBooks icon and your bookshelf appears. In the upper corner, tap the Store button and the bookshelf flips around to reveal the iBookstore. From the iBookstore, you can browse books by title, author, or genre. You can also view featured books as well as books available on the New York Times best-seller lists. Tap on a book to see more details and read a sample. When you buy a book it automatically appears on your iBooks bookshelf.