WP Rocket - WP Rocket offers a caching plugin for Wordpress.
XAMPP - XAMPP is a free and open-source cross-platform web server that is primarily used when locally developing web applications.
Autoptimize - Autoptimize makes optimizing your site really easy.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
WP Super Cache - A very fast caching system for WordPress that produces static HTML files.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies