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 41,538 live websites that are using mod_jk.

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Technology usage statistics

Websites using mod_jk41,538 websites
Most popular in the country US
Market position in Web Server Extensions#11
Market penetration in Web Server Extensions1.95%
Most popular version1.2.40

Technology adoption

Recent changes in mod_jk usage. (See mod_jk Usage Changes report)
Websites that added mod_jk+2,701
Websites that dropped mod_jk-3,807
Websites that changed version of mod_jk429

Distribution by websites popularity

mod_jk detection in the top websites by popularity
Top 10k sites8 websites
Top 100k sites94 websites
Top 1m sites1,019 websites

Websites utilizing mod_jk

Top websites that use mod_jk

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Geographical Distribution

Technology usage distribution by websites across the globe.

Alternative Technologies

OpenSSL: Total 1,609,789 domains found using OpenSSL
mod_fcgid: Total 556,536 domains found using mod_fcgid
Google PageSpeed: Total 336,843 domains found using Google PageSpeed
mod_ssl: Total 169,711 domains found using mod_ssl
mod_bwlimited: Total 146,309 domains found using mod_bwlimited
WebDAV: Total 121,864 domains found using WebDAV
mod_perl: Total 78,687 domains found using mod_perl
mod_dav: Total 62,653 domains found using mod_dav
mod_gzip: Total 58,747 domains found using mod_gzip
mod_python: Total 43,751 domains found using mod_python


  • 1 (43 subversions, 41,090 domains)