Google is the world's leading search engine -- it's how most people find things they are looking for on the Internet. In the late 1990s, Google vastly improved how search worked, with the effect of increasing search activity. Google's self-declared mission is "to organize the world's information and make it universally accessible and useful." Below is a list of sites that include many of Google's own services, as well as websites that have information or services related to Google.