Most used UI Components – of web applications
Almost most of the UI components you use in your web applications as a collection.
Why name UI Components?
There is a misleading word used in the industry. Let's say you need a image carousel.
You search in google and find out one which fits your needs & the name of it is jQuery Carousel you call it a jQuery plugin to your web application. It's not just jQuery, its a combination of HTML, CSS and JS.
It's just a UI Component Plugin which uses jQuery instead of javascript, and that's where the idea of creating a repo for UI components arise.