List of largest Internet companies

This is a list of Internet companies by revenue and market capitalization. The list is limited to dot-com companies, defined as a company that does the majority of its business on the Internet, with annual revenues exceeding US$1 billion. It excludes Internet service providers or other information technology companies. For a more general list of technology companies, see list of largest technology companies by revenue. This list is incomplete and does not include some dot-com companies acquired by incumbent brick and mortar firms to expand the distribution channels.