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.
Imgix is a visual media platform for managing, processing, rendering, optimising and delivering your existing images.
PHP is a general-purpose scripting language used for web development.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.