Internet Archive: Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 466 billion archived web pages and more.
It provides free public access to collections of digitized materials, including web sites, software applications/games, music, movies/videos, moving images, and nearly three million public-domain books. As of May 2014, its collection topped 15 petabytes. In addition to its archiving function, the Archive is an activist organization, advocating for a free and open Internet.
The Internet Archive allows the public to upload and download digital material to its data cluster, but the bulk of its data is collected automatically by its web crawlers, which work to preserve as much of the public web as possible. Its web archive, The Wayback Machine, contains over 150 billion web captures. The Archive also oversees one of the world's largest book digitization projects.
The Internet Archive contains: