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A computer that provides World Wide Web services on the Internet. It includes the hardware, operating system, Web server software, TCP/IP protocols and the Web site content (Web pages). If the Web server is used internally and not by the public, it may be known as an “intranet server.”

  • Apache

    A widely-used public domain, UNIX-based Web server from the Apache Group ( It is based on, and is a plug-in replacement for, NCSA’s HTTPd server Version 1.3. The name came from a body of existing code and many “patch files.”

  • Internet Information Server

    Web server software from Microsoft that runs under Windows NT, Windows 2000, and Microsoft.Net. It supports Netscape’s SSL security protocol and turns an NT-based PC into a Web site. Microsoft’s Web browser, Internet Explorer, is also included.