Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
cdnjs is a free distributed JS library delivery service.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Linkedin Sign-In is an authentication system that reduces the burden of login for users, by enabling them to sign in with their Linkedin account.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Pinterest is an image sharing and social media service designed to enable saving and discovery of information.
Popper is a positioning engine, its purpose is to calculate the position of an element to make it possible to position it near a given reference element.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.