Apache is a web server which is used for the realization of nearly every second website. Already in 1995 the first Apache server was published as freeware of the Apache Software Foundation. Beside the simple modularity the server offers various functionalities which aren’t inferior to the concurrence which costs money.
The Apache server is based on the programming language C and supports several operating systems like e.g. Linux, UNIX or Win32. The modular setup allows an encryption
of the data streams between browser
and web server. The server-side scripting languages (Server Side Includes) like PHP or Perl are also modularly tied. With their help you can implement websites extremely dynamic and flexible.