HTTP server

The term web server can mean one of two things:A computer program that is responsible for accepting HTTP requests from clients, which are known as web browsers, and serving them HTTP responses along with optional data contents, which usually are web pages such as HTML documents and linked objects (images, etc.).A computer that runs a computer program which provides the functionality described in the first sense of the term.
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<World-Wide Web> (Or "web server") A server process running at a web site which sends out web pages in response to HTTP requests from remote browsers.
If one site runs more than one server they must use different port numbers. Alternatively, several hostnames may be mapped to the same computer in which case they are known as "virtual servers".
Apache and NCSA HTTPd are two popular web servers. There are many others including some for practically every platform. Servers differ mostly in the "server-side" features they offer such as server-side include, and in their authentication and access control mechanisms. All decent servers support CGI and most have some binary API as well.
(1997-02-05)