Google is an American multinational technology company specializing in Internet-related services and products that include online advertising technologies, search, cloud computing, and software.
Yahoo Inc. is an American multinational technology company headquartered in Sunnyvale, California. Yahoo was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995.
Baidu, Inc incorporated on January 18, 2000, is a Chinese web services company headquartered at theBaidu Campus in Beijing’s Haidian District. Baidu offers many services, including a Chinese search engine for websites,
AOL Inc is an American multinational mass media corporation based in New York