The Apache server has long been the most popular web server software in use. A web server is the part of your website which delivers (or "serves") web pages to browsers. The Apache HTTP Server is provided by the Apache Software Foundation. It runs on many different operating systems, including Unix, Linux, and Windows.  It is the Web's most successful piece of open source code.
Conservapedia runs the Apache HTTP Server to host MediaWiki.
- 'The half-dozen or so volunteer developers in the original project sent in so many revisions, Behlendorf says, the group called it "a patchy Web server."' InformationWeek - January 13, 2007
- "The Apache group was formed around a number of people who provided patch files that had been written for NCSA httpd 1.3. The result after combining them was A PAtCHy server." Information on the Apache HTTP Server Project
- "At first the group referred to their project by the joke name "A Patchy Server" -- in reference to the patches they were applying to the NCSA server to add features and fixes." Wired