LibriVox — Free public domain audiobooks.
Bartleby — Large collection of reference works, poetry, fiction, and nonfiction.
ICDL — Open repository of digital texts aimed at children of a global context.
Internet Archive — Nonprofit library of millions of free books, movies, software, music, and more.
Open Culture — Free cultural and educational media, including audio books, online courses, certificate courses/MOOCs, movies, eBooks, K-12 resources, and language lessons.
Open Library — Classics of world literature.
Project Gutenberg — Over 50,000 free eBooks in many formats available for download and online reading.
Sing Me a Story — Open listing of songs to listen to for children around the world.
Textbook Revolution — Student-run site that gives users access to free textbooks in subjects ranging from accounting to chemistry.
The Free Library — The go-to place for access to newspapers, magazines, journal articles, and classic books.
TV411 — Engaging videos on reading and writing and sections on basic finance, science, and math.
Wikipedia Offline — Server-side tool providing web pages to cheap clients.