JUnit - JUnit is a simple framework to write repeatable tests.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Grails - An Open Source, full stack, web application framework for the JVM
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.