Bootstrap is a free and open-source front-end framework for designing websites and web applications. It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.
Facebook Pixel helps organizations measure customer actions, build audiences and unlock optimisation tools. Facebook pixel is a snippet of JavaScript code that allows you to track visitor activity on your website.
Plesk is a commercial web hosting and server data center automation software with a control panel developed for Linux and Windows-based retail hosting service providers.