Undertow is a flexible, performant web server written in Java by Red Hat.
Categories: Web server
Official website: https://undertow.io
Undertow is ranked #78 of 94 in Web server by website adoption.
WhatStack detects Undertow by analyzing HTTP headers, HTML source code, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries using signature-based pattern matching across 10 different analyzers.