The NCSA HTTPd was a Web server originally developed at the NCSA by Marc Andreessen and others. It was the second web server developed, following Tim Berners-Lee's first web server developed at CERN. It was for some time the natural counterpart to the Mosaic web browser in the client-server World Wide Web. It also introduced the Common Gateway Interface, allowing for the creation of dynamic websites.
Development of NCSA HTTPd was suspended in 1998, but the code lives on the Apache project, which now runs approximately two-thirds of Internet web servers.
