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Yahoo! is a technology company based in the United States that has an Internet portal, a web directory and a series of services. -
It was founded by Garrett Gruener and David Warthen in Berkeley, California. -
Google LLC is an American multinational technology company focusing on artificial intelligence, online advertising, search engine technology, cloud computing, software, quantum computing, e-commerce, and consumer electronics.
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DuckDuckGo is owned by founding member Gabriel Weinberg. The headquarters are located in Pennsylvania (United States) -
Microsoft Bing is a web search engine from Microsoft.
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