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Apache > HTTP Server > Documentation > Version 2.4

Module Index

Below is a list of all of the modules that come as part of the Apache HTTP Server distribution. See also the complete alphabetical list of all Apache HTTP Server directives.

See also

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Core Features and Multi-Processing Modules

core
Core Apache HTTP Server features that are always available
mpm_common
A collection of directives that are implemented by more than one multi-processing module (MPM)
event
A variant of the worker MPM with the goal of consuming threads only for connections with active processing
mpm_netware
Multi-Processing Module implementing an exclusively threaded web server optimized for Novell NetWare
mpmt_os2
Hybrid multi-process, multi-threaded MPM for OS/2
prefork
Implements a non-threaded, pre-forking web server
mpm_winnt
Multi-Processing Module optimized for Windows NT.
worker
Multi-Processing Module implementing a hybrid multi-threaded multi-process web server
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Other Modules

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mod_access_compat
Group authorizations based on host (name or IP address)
mod_actions
Execute CGI scripts based on media type or request method.
mod_alias
Provides for mapping different parts of the host filesystem in the document tree and for URL redirection
mod_allowmethods
Easily restrict what HTTP methods can be used on the server
mod_asis
Sends files that contain their own HTTP headers
mod_auth_basic
Basic HTTP authentication
mod_auth_digest
User authentication using MD5 Digest Authentication
mod_auth_form
Form authentication
mod_authn_anon
Allows "anonymous" user access to authenticated areas
mod_authn_core
Core Authentication
mod_authn_dbd
User authentication using an SQL database
mod_authn_dbm
User authentication using DBM files
mod_authn_file
User authentication using text files
mod_authn_socache
Manages a cache of authentication credentials to relieve the load on backends
mod_authnz_fcgi
Allows a FastCGI authorizer application to handle Apache httpd authentication and authorization
mod_authnz_ldap
Allows an LDAP directory to be used to store the database for HTTP Basic authentication.
mod_authz_core
Core Authorization
mod_authz_dbd
Group Authorization and Login using SQL
mod_authz_dbm
Group authorization using DBM files
mod_authz_groupfile
Group authorization using plaintext files
mod_authz_host
Group authorizations based on host (name or IP address)
mod_authz_owner
Authorization based on file ownership
mod_authz_user
User Authorization
mod_autoindex
Generates directory indexes, automatically, similar to the Unix ls command or the Win32 dir shell command
mod_brotli
Compress content via Brotli before it is delivered to the client
mod_buffer
Support for request buffering
mod_cache
RFC 2616 compliant HTTP caching filter.
mod_cache_disk
Disk based storage module for the HTTP caching filter.
mod_cache_socache
Shared object cache (socache) based storage module for the HTTP caching filter.
mod_cern_meta
CERN httpd metafile semantics
mod_cgi
Execution of CGI scripts
mod_cgid
Execution of CGI scripts using an external CGI daemon
mod_charset_lite
Specify character set translation or recoding
mod_data
Convert response body into an RFC2397 data URL
mod_dav
Distributed Authoring and Versioning (WebDAV) functionality
mod_dav_fs
Filesystem provider for mod_dav
mod_dav_lock
Generic locking module for mod_dav
mod_dbd
Manages SQL database connections
mod_deflate
Compress content before it is delivered to the client
mod_dialup
Send static content at a bandwidth rate limit, defined by the various old modem standards
mod_dir
Provides for "trailing slash" redirects and serving directory index files
mod_dumpio
Dumps all I/O to error log as desired.
mod_echo
A simple echo server to illustrate protocol modules
mod_env
Modifies the environment which is passed to CGI scripts and SSI pages
mod_example_hooks
Illustrates the Apache module API
mod_expires
Generation of Expires and Cache-Control HTTP headers according to user-specified criteria
mod_ext_filter
Pass the response body through an external program before delivery to the client
mod_file_cache
Caches a static list of files in memory
mod_filter
Context-sensitive smart filter configuration module
mod_headers
Customization of HTTP request and response headers
mod_heartbeat
Sends messages with server status to frontend proxy
mod_heartmonitor
Centralized monitor for mod_heartbeat origin servers
mod_http2
Support for the HTTP/2 transport layer
mod_ident
RFC 1413 ident lookups
mod_imagemap
Server-side imagemap processing
mod_include
Server-parsed html documents (Server Side Includes)
mod_info
Provides a comprehensive overview of the server configuration
mod_isapi
ISAPI Extensions within Apache for Windows
mod_lbmethod_bybusyness
Pending Request Counting load balancer scheduler algorithm for mod_proxy_balancer
mod_lbmethod_byrequests
Request Counting load balancer scheduler algorithm for mod_proxy_balancer
mod_lbmethod_bytraffic
Weighted Traffic Counting load balancer scheduler algorithm for mod_proxy_balancer
mod_lbmethod_heartbeat
Heartbeat Traffic Counting load balancer scheduler algorithm for mod_proxy_balancer
mod_ldap
LDAP connection pooling and result caching services for use by other LDAP modules
mod_log_config
Logging of the requests made to the server
mod_log_debug
Additional configurable debug logging
mod_log_forensic
Forensic Logging of the requests made to the server
mod_logio
Logging of input and output bytes per request
mod_lua
Provides Lua hooks into various portions of the httpd request processing
mod_macro
Provides macros within apache httpd runtime configuration files
mod_md
Managing domains across virtual hosts, certificate provisioning via the ACME protocol
mod_mime
Associates the requested filename's extensions with the file's behavior (handlers and filters) and content (mime-type, language, character set and encoding)
mod_mime_magic
Determines the MIME type of a file by looking at a few bytes of its contents
mod_negotiation
Provides for content negotiation
mod_nw_ssl
Enable SSL encryption for NetWare
mod_privileges
Support for Solaris privileges and for running virtual hosts under different user IDs.
mod_proxy
Multi-protocol proxy/gateway server
mod_proxy_ajp
AJP support module for mod_proxy
mod_proxy_balancer
mod_proxy extension for load balancing
mod_proxy_connect
mod_proxy extension for CONNECT request handling
mod_proxy_express
Dynamic mass reverse proxy extension for mod_proxy
mod_proxy_fcgi
FastCGI support module for mod_proxy
mod_proxy_fdpass
fdpass external process support module for mod_proxy
mod_proxy_ftp
FTP support module for mod_proxy
mod_proxy_hcheck
Dynamic health check of Balancer members (workers) for mod_proxy
mod_proxy_html
Rewrite HTML links in to ensure they are addressable from Clients' networks in a proxy context.
mod_proxy_http
HTTP support module for mod_proxy
mod_proxy_http2
HTTP/2 support module for mod_proxy
mod_proxy_scgi
SCGI gateway module for mod_proxy
mod_proxy_uwsgi
UWSGI gateway module for mod_proxy
mod_proxy_wstunnel
Websockets support module for mod_proxy
mod_ratelimit
Bandwidth Rate Limiting for Clients
mod_reflector
Reflect a request body as a response via the output filter stack.
mod_remoteip
Replaces the original client IP address for the connection with the useragent IP address list presented by a proxies or a load balancer via the request headers.
mod_reqtimeout
Set timeout and minimum data rate for receiving requests
mod_request
Filters to handle and make available HTTP request bodies
mod_rewrite
Provides a rule-based rewriting engine to rewrite requested URLs on the fly
mod_sed
Filter Input (request) and Output (response) content using sed syntax
mod_session
Session support
mod_session_cookie
Cookie based session support
mod_session_crypto
Session encryption support
mod_session_dbd
DBD/SQL based session support
mod_setenvif
Allows the setting of environment variables based on characteristics of the request
mod_slotmem_plain
Slot-based shared memory provider.
mod_slotmem_shm
Slot-based shared memory provider.
mod_so
Loading of executable code and modules into the server at start-up or restart time
mod_socache_dbm
DBM based shared object cache provider.
mod_socache_dc
Distcache based shared object cache provider.
mod_socache_memcache
Memcache based shared object cache provider.
mod_socache_redis
Redis based shared object cache provider.
mod_socache_shmcb
shmcb based shared object cache provider.
mod_speling
Attempts to correct mistaken URLs by ignoring capitalization, or attempting to correct various minor misspellings.
mod_ssl
Strong cryptography using the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols
mod_status
Provides information on server activity and performance
mod_substitute
Perform search and replace operations on response bodies
mod_suexec
Allows CGI scripts to run as a specified user and Group
mod_systemd
Provides better support for systemd integration
mod_tls
TLS v1.2 and v1.3 implemented in memory-safe Rust via the rustls library
mod_unique_id
Provides an environment variable with a unique identifier for each request
mod_unixd
Basic (required) security for Unix-family platforms.
mod_userdir
User-specific directories
mod_usertrack
Clickstream logging of user activity on a site
mod_version
Version dependent configuration
mod_vhost_alias
Provides for dynamically configured mass virtual hosting
mod_watchdog
provides infrastructure for other modules to periodically run tasks
mod_xml2enc
Enhanced charset/internationalisation support for libxml2-based filter modules