Category - Web Server Extensions

mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE using the Apache JServ Protocol.

We have discovered 21,734 live websites that are using mod_jk.

Download website list

Technology usage statistics

Websites using mod_jk 21,734 websites
Most popular in the country United States of America
Market position in Web Server Extensions #10
Market share in Web Server Extensions 1.25%
Most popular version 1

Technology adoption

Recent changes in mod_jk usage. (See mod_jk Usage Changes report)
Websites that added mod_jk +319
Websites that dropped mod_jk -1,356
Websites that changed version of mod_jk 102

Distribution by websites popularity

mod_jk detection in the top websites by popularity
Top 10k sites 7 websites
Top 100k sites 41 websites
Top 1m sites 964 websites

Websites utilizing mod_jk

Top websites that use mod_jk

Domain Country Rank Contacts United States of America 516 United States of America 3,359 United States of America 4,186 United States of America 4,456 United States of America 5,524 United States of America 9,363
See full domain list
Flat price per the report, subscription is not required.

Market Share

mod_jk market share within the Web Server Extensions category

Geographical Distribution

Technology usage distribution by websites across the globe.


  • 1 (42 subversions, 21,429 domains)

mod_jk often used together with

Category - Web Servers.
Apache Tomcat is used together with mod_jk on 0 domains. Total 125,436 domains found using Apache Tomcat

Alternative Technologies

BytesLog: Total 819 domains found using BytesLog
mod_accel: Total 78 domains found using mod_accel
mod_apreq2: Total 4,943 domains found using mod_apreq2
mod_auth_kerb: Total 1,743 domains found using mod_auth_kerb
mod_auth_pam: Total 1,979 domains found using mod_auth_pam
mod_auth_passthrough: Total 5,021 domains found using mod_auth_passthrough
mod_auth_pgsql: Total 1,766 domains found using mod_auth_pgsql
mod_bwlimited: Total 137,078 domains found using mod_bwlimited
mod_chroot: Total 169 domains found using mod_chroot
mod_dav: Total 44,992 domains found using mod_dav