Category - Web Servers

Undertow is a high performance web server written in java, providing both blocking and non-blocking APIs based on NIO.

We have discovered 899 live website that are using Undertow.

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Technology usage statistics

Websites using Undertow 899 websites
Most popular in the country United States of America
Market position in Web Servers #34
Market share in Web Servers <0.1%
Most popular version 2

Technology adoption

Recent changes in Undertow usage. (See Undertow Usage Changes report)
Websites that added Undertow +16
Websites that dropped Undertow -53

Distribution by websites popularity

Undertow detection in the top websites by popularity
Top 10k sites 5 websites
Top 100k sites 17 websites
Top 1m sites 162 websites

Websites utilizing Undertow

Top websites that use Undertow

Domain Country Rank Contacts
www.diva-portal.org Sweden 3,717
kth.diva-portal.org Sweden 3,806
www.congreso.es United States of America 5,914
www.ferguson.com United States of America 7,134
tst.jus.br Brazil 9,812
rushbackstage.com United States of America 25,599
See full domain list
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Market Share

Undertow market share within the Web Servers category

Geographical Distribution

Technology usage distribution by websites across the globe.


(Ordered by popularity)
  • 2 (33.33%)
  • 10 (33.33%)
  • 9 (16.67%)
  • 7 (16.67%)

Undertow often used together with

Category - Document Encoding.
UTF-8 is used together with Undertow on 697 domains. Total 8,059,052 domains found using UTF-8
Category - Programming Languages.
Java is used together with Undertow on 666 domains. Total 259,052 domains found using Java
Category - Document Standards.
JavaScript is used together with Undertow on 592 domains. Total 6,019,684 domains found using JavaScript
Category - JavaScript Libraries.
jQuery is used together with Undertow on 502 domains. Total 4,033,938 domains found using jQuery
Category - Mobile.
Viewport Meta is used together with Undertow on 464 domains. Total 5,070,400 domains found using Viewport Meta
Category - Web Servers.
WildFly is used together with Undertow on 446 domains. Total 423 domains found using WildFly

Alternative Technologies

Allegro RomPager: Total 13 domains found using Allegro RomPager
Amazon EC2: Total 31,655 domains found using Amazon EC2
AOLserver: Total 73 domains found using AOLserver
Apache: Total 3,668,704 domains found using Apache
Apache Tomcat: Total 29,730 domains found using Apache Tomcat
ATS: Total 18,133 domains found using ATS
Apple Http Server: Total 133 domains found using Apple Http Server
BaseHTTP: Total 64 domains found using BaseHTTP
Boa: Total 36 domains found using Boa
bytex: Total 80 domains found using bytex