Apache is a free and open-source cross-platform web server 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.

Contact Form 7 is an WordPress plugin which can manage multiple contact forms. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering.

PHP is a general-purpose scripting language used for web development.

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.

Yoast SEO is a search engine optimisation plugin for WordPress and other platforms.

Responsive progress bars with animated SVG paths.

EWWW Image Optimizer is an image optimisation WordPress plugin designed to improve the performance of your website.

Modernizr is a JavaScript library that detects the features available in a user's browser.

W3 Total Cache (W3TC) improves the SEO and increases website performance and reducing load times by leveraging features like content delivery network (CDN) integration and the latest best practices.

MySQL is an open-source relational database management system.

WPBakery is a drag and drop visual page builder plugin for WordPress.

reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.

Query Migrate is a javascript library that allows you to preserve the compatibility of your jQuery code developed for versions of jQuery older than 1.9.