The Internet Archive is a non-profit digital library with the stated mission: “universal access to all knowledge.” It offers permanent storage and access to collections of digitized materials, including websites, music, moving images, and books. The Internet Archive was founded by Brewster Kahle in 1996.

Wayback Machine

The Internet Archive has capitalized on the popular use of the term “WABAC Machine” from a segment of the old Rocky and Bullwinkle cartoon, and uses the name “Wayback Machine” for its service that allows archives of the World Wide Web to be searched and accessed. This service allows users to see archived versions of web pages of the past, what the Internet Archive calls a “three dimensional index”. Millions of websites and their associated data (images, source code, documents, etc.) are saved in a gigantic database. The service can be used to see what previous versions of websites used to look like, to grab original source code from websites that may no longer be directly available, or to visit websites that no longer even exist. Not all websites are available, however, because many website owners choose to exclude their sites.

Wayback Machine on Allaboutsite:

Now Allaboutsite is providing history with link to waybackmachine.

(http://web.archive.org/web/*/http://siteurl.com)

This link takes you to the archived version at the Wayback Machine. You can see how a website looked in the past. This way back machine placed on right panel of the siteurl page.