D3 based reusable chart library
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Django is a Python-based free and open-source web application framework.
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.
VK is a Russian online social media and social networking service.