Apache is a free and open-source cross-platform web server software.
Divi is a WordPress Theme and standalone WordPress plugin from Elegant themes that allows users to build websites using the visual drag-and-drop Divi page builder.
PHP is a general-purpose scripting language used for web development.
Visual Composer is an all-in-one web design tool for anyone who uses WordPress.
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.