Apache is a free and open-source cross-platform web server software.
Debian is a Linux software which is a free open-source software.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Retype is an open-source static site generator built with Node.js that allows users to create and manage websites with ease using Markdown as the primary content format.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.