Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Elfsight is an all-in-one platform offering 70+ customisable widgets for websites.
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.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.
Sendinblue is an email marketing solution for small and medium-sized businesses that want to send and automate email marketing campaigns.
A modest JavaScript framework for the HTML you already have.