A web search engine is an interactive tool that enables users to locate information available on the World Wide Web. Electronic mail is a system that allows users to send and receive messages and data through the Internet. E-mail resides on Host computers that run 24 hours a day. A client mail program like Pine or Juno is used to read mail, reply to mail and send new messages. An Internet Service Provider is a company that provides Internet access.
Customers can be businesses, individuals and organizations.
Additional services that can be offered by an ISP include web hosting, e-mail and proprietary online services.