Apache is a free and open-source cross-platform web server software.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Gravatar is a service for providing globally unique avatars.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
WooCommerce is an open-source ecommerce plugin for WordPress.
WP-Optimize is an all-in-one WordPress plugin that cleans your database, compresses your large images and caches your site.