Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
Modernizr is a JavaScript library that detects the features available in a user's browser.
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.