Grav - The modern open source flat-file CMS
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Bludit - Bludit is a web application to build your own website or blog in seconds, it's completely free and open source. Markdown support.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
HTMLy - HTMLy is an open source databaseless blogging platform. A Flat-File Blog and Flat-File CMS written in PHP prioritizes simplicity and speed.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.