Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
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.
Semantic UI is a front-end development framework, powered by LESS and jQuery.
Simpli.fi is a programmatic advertising and agency management software.
Typekit is an online service which offers a subscription library of fonts.