About Facebook is an online social networking service headquartered in Menlo Park, California. After registering to...

About Microsoft Corporation is an American multinational corporation headquartered in Redmond, Washington, that develops, manufactures, licenses,...

About Apple Inc. is an American multinational corporation headquartered in Cupertino, California, that designs, develops, and...

About Google is an American multinational corporation specializing in Internet-related services and products. These include online...