Apache HTTP Server C The Apache web server - Apache httpd. The Apache HTTP Server is an open-source HTTP server for modern operating systems including UNIX, MS-Windows, Macintosh and Netware. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards. Apache has been the most popular web server on the Internet since April of 1996. Recommended stable release 2.2.14 2009-10-05 2.2.14 Legacy release 2.0.63 2008-01-10 2.0.63 Legacy release 1.3.41 2008-01-10 1.3.41 Hypertext Transfer Protocol -- HTTP/1.1 IETF RFC 2616 HTTP Authentication: Basic and Digest Access Authentication IETF RFC 2617 HTTP Extensions for Distributed Authoring -- WEBDAV IETF RFC 2518 Versioning Extensions to WebDAV IETF RFC 3253 Uniform Resource Identifier (URI): Generic Syntax IETF RFC 3986