Web server extensions
About Web server extensions
Web server extensions tools help websites with server modules and web server add-ons. There are 12 Web server extensions technologies tracked in our database, used across 18,016 website deployments.
Technologies
12
Total Detections
18,016
#1 Technology
OpenSSL
1
OpenSSL
13,215 companies2Google PageSpeedCaching, Performance
3,587 companies3mod_perl
340 companies4mod_jk
237 companies5mod_wsgi
205 companies6mod_ssl
203 companies7mod_dav
83 companies8mod_fastcgi
78 companies9mod_python
51 companies10mod_rails
7 companies11mod_rack
7 companies12Shelf
3 companiesFrequently Asked Questions
What is the most popular Web server extensions tool?+
OpenSSL is the most popular Web server extensions tool with 13,215 companies using it.
How many Web server extensions tools exist?+
We track 12 Web server extensions technologies in our database.
What companies use Web server extensions tools?+
Web server extensions tools are used across 18,016 website deployments by companies in every major industry.
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Browse DatasetsData last updated: June 2026