|This article relies on references to primary sources. (April 2011)|
NCSA HTTPd was a web server originally developed at the NCSA by Robert McCool and others. It was among the earliest web servers developed, following Tim Berners-Lee's CERN httpd, Tony Sanders' Plexus server, and some others. 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.
When development slowed down, an independent effort, the Apache project, took the codebase and continued; meanwhile, NCSA released one more version (1.5), then ceased development. At the time, NCSA HTTPd powered over 95% of all webservers on the Internet; nearly all of them switched over to Apache.
The NCSA code has since been removed from Apache, as part of a rewrite.
See also 
- Comparison of lightweight web servers
- Comparison of web server software
- National Center for Supercomputing Applications
- The NCSA HTTPd homepage
- About Apache
- The NCSA HTTPd Home Page (a mirror site of the official one)[dead link]
- NCSA software and technologies (with HTTPd mentioned)
- The NCSA HTTPd homepage on the Internet Archive (as of 2007-10-29)
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