Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
CS Cart is a turnkey ecommerce shopping cart software solution.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
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.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
UIKit is the framework used for developing iOS applications.