In computing, Apache, an open-source HTTP server, comprises a small core for HTTP request/response processing and for Multi-Processing Modules (MPM) which dispatches data processing to threads and/or processes. Many additional modules (or "mods" ) are available to extend the core functionality for special purposes.
The following is a list of all the first- and third-party modules available for the Apache web server:
References
List of Apache modules Wikipedia(Text) CC BY-SA