Since 1996, this San Francisco-based not-for-profit organisation has been building an Internet library to offer permanent public access for free to websites and other digital "cultural artifacts". In late 1999, the organization started to grow to include more well-rounded collections. Now the Internet Archive includes texts, audio, moving images, and software as well as archived web pages in our collections, and provides specialized services for adaptive reading and information access for the blind and other persons with disabilities. Try searching the Wayback Machine to look up previous incarnations of your favourite websites (currently archiving over 150 billion web pages).
Freely available data on internet.