The Apache Module report is a breakdown of the popular add-on modules to the Apache web servers. All percentages shown are based on web servers running Apache in this month's survey.

Click any module to see detailed graphs and histories.

Module	November 2021 Count	November 2021 %	October 2021 Count	October 2021 %	Growth %
OpenSSL	1,265,522	6.21	1,295,725	6.24	-0.46
PHP	990,927	4.86	998,980	4.81	1.09
mod_ssl	227,656	1.12	234,241	1.13	-0.95
mod_gzip	157,795	0.77	152,694	0.73	5.32
mod_bwlimited	139,755	0.69	141,604	0.68	0.59
perl	103,315	0.51	105,125	0.51	0.16
Perl	87,914	0.43	89,575	0.43	0.03
DAV	84,131	0.41	87,348	0.42	-1.84
Python	73,613	0.36	70,915	0.34	5.79
mod_python	42,296	0.21	42,771	0.21	0.78
mod_jk	38,571	0.19	36,578	0.18	7.47
FrontPage	25,831	0.13	26,677	0.13	-1.32
mod_fastcgi	24,805	0.12	25,225	0.12	0.22
SVN	19,238	0.09	20,740	0.10	-5.46
mod_auth_passthrough	13,446	0.07	11,298	0.05	21.29
mod_throttle	6,059	0.03	6,188	0.03	-0.21
Ben-SSL	5,768	0.03	5,829	0.03	0.85
mod_auth_pam	2,943	0.01	2,963	0.01	1.23
rus	2,774	0.01	2,800	0.01	0.97
JRun	2,264	0.01	1,530	0.01	50.81
mod_log_bytes	2,158	0.01	2,177	0.01	1.03
mod_layout	1,230	0.01	1,239	0.01	1.18
mod_ruby	1,129	0.01	1,143	0.01	0.67
Sun-ONE-ASP	865	0.00	863	0.00	2.15
mod_mono	835	0.00	859	0.00	-0.93
Resin	819	0.00	816	0.00	2.29
AuthMySQL	713	0.00	728	0.00	-0.18
mod_watch	555	0.00	576	0.00	-1.80
mod_tsunami	302	0.00	313	0.00	-1.67
mod_jk2	250	0.00	255	0.00	-0.08
mod_macro	245	0.00	248	0.00	0.68
Embperl	237	0.00	236	0.00	2.35
mod_ldap_userdir	229	0.00	241	0.00	-3.16
mod_auth_pam_external	215	0.00	221	0.00	-0.85
iae_chroot	212	0.00	219	0.00	-1.34
mod_chroot	212	0.00	219	0.00	-1.34
ApacheJServ	210	0.00	212	0.00	0.95
mod_accel	129	0.00	134	0.00	-1.89
gd	128	0.00	127	0.00	2.72
mod_plsql	99	0.00	105	0.00	-3.91
mod_become	98	0.00	100	0.00	-0.12
PHP-CGI	95	0.00	97	0.00	-0.19
mod_auth_sspi	73	0.00	77	0.00	-3.38
mod_filter	60	0.00	67	0.00	-8.73
mod_choke	55	0.00	43	0.00	30.36
mod_ucam_webauth	46	0.00	43	0.00	9.03
Tomcat	44	0.00	46	0.00	-2.52
mod_interchange	18	0.00	18	0.00	1.92
mod_webapp	18	0.00	18	0.00	1.92
mod_accounting	13	0.00	15	0.00	-11.67
Raven	8	0.00	8	0.00	1.92
SSLeay	7	0.00	5	0.00	42.68
CSacek	6	0.00	6	0.00	1.92
mod_czech	6	0.00	6	0.00	1.92
mod_oas	5	0.00	5	0.00	1.92
ihtml	3	0.00	3	0.00	1.92
Midgard	2	0.00	2	0.00	1.92
AuthPostgreSQL	1	0.00	1	0.00	1.92
AxKit	1	0.00	1	0.00	1.92
mod_mp3	1	0.00	1	0.00	1.92
mod_backhand	1	0.00	1	0.00	1.92

Note: Readers are cautioned that the Growth percentages are based on a module's market share penetration rather than the absolute number of modules we detected. Thus, it is possible for the number of modules to increase, while the growth is actually a negative value.

Looking for a specific module? Check the module registry at http://modules.apache.org

Note: OpenSSL, BSafe, and SSLeay aren't true modules in their own right; rather they are required for a number of SSL enabling modules, and will often have their signature string imbedded into the server string, thus allowing us to determine which of them is being used. Rather than separate this out into a separate report, we've included them here.