Apache Reference:
Core Functionality
http_core Apache Base Functionality mod_so Dynamic Shared Object (DSO) Bootstrapping URL Mapping
mod_alias Simple URL Translation and Redirection mod_rewrite Advanced URL Translation And Redirection mod_userdir URL Selection by User Names mod_imap URL Selection by Image Map Coordinations mod_speling URL Spelling Correction Access Control
mod_access Host- and Network-Based Access Control User Authentication
mod_auth User Authentication by User Name/Password mod_auth_anon User Authentication by Anonymous Name/E-Mail Address mod_auth_dbm User Authentication by User Name/Password (UNIX NDBM) mod_auth_db User Authentication by User Name/Password (Berkeley-DB) mod_digest User Authentication by User Name/Realm/Password Content Selection
mod_dir Content Selection by Using Directory Default Documents mod_actions Content Selection by Content Types and Request Methods mod_negotiation Content Selection by Best-Matching Client Capabilities Environment Creation
mod_env Fixed Environment Variable Creation mod_setenvif Conditional Environment Variable Creation mod_unique_id Generation of Unique Identifiers by Request Server-Side Scripting
mod_cgi Common Gateway Interface (CGI) Implementation mod_include Server-Side Includes (SSI) Implementation Response Header Generation
mod_mime Fixed Content Type/Encoding Assignment mod_mime_magic Automatic Content Type/Encoding Assignment mod_expires Creation of HTTP Expires Header mod_headers Creation of Arbitrary HTTP Headers mod_cern_meta Creation of Arbitrary HTTP Headers (CERN-style) Internal Content Handlers
mod_asis Generation of Raw Responses mod_autoindex Generation of Directory Index Documents mod_status Display Summary of Server Runtime Information mod_info Display Summary of Server Configuration-Time Information Request Logging
mod_log_config Generic Request Logging mod_log_agent Specialized User-Agent Logging (Deprecated) mod_log_referer Specialized Referrer Logging (Deprecated) mod_usertrack Specialized User Click-Trail Logging Experimental
mod_mmap_static Caching of Frequently Served Pages via Memory Mapping mod_example Apache API Demonstration (Developers Only) Extensional Functionality
mod_proxy Caching Proxy Implementation for HTTP and FTP mod_perl Perl Integration and Interface mod_ssl SSL/TLS Integration and Interface