Owl carousel is a jQuery plugin. It is developed by David Deutsh. This plugin helps you to create a beautiful responsive carousel slider. It is fully customizable, free, easy to use, upgradable…etc. This plugin has touch and drag support and works correctly with modern browsers. You can download it from github. All you have to do is put the link in your code and feel free to use.
CountUp.js is an open source and free library by inorganic. It is an independent and lightweight library. This library is useful for creating animated numeric data in an awesome way. It shows the counting animation of certain number from 0 to given number. Such as if you want to animate 50 it shows counting animation from 0 to 50. You can use it via npm or you can directly install it from GitHub.
Wow.js is an open source and free library. It shows the css animation when you scroll down a page. You need to link css library first and activate wow.js. You can use many animation style and set time duration. When you scroll a page you can make your web element appear from different places. It is simple to install and fast execution. This library makes your webpage more beautiful.
Parallax.js is a simple parallax scrolling effect library. Most of the browser uses parallax effect. Parallax effect is a web design technique where background element scroll slower than foreground content. This library is free and open source. It makes the scrolling attractive. Parallax.js create a fixed-position element for each parallax image. Download and use it in your own way.
Hammer.js is a popular library that helps you to add touch gestures to your web app. It is free open source and easy to use. You can add multiple gestures in your webpage. The gestures work when you touch, scroll, pinch for zoom and many others. You can get this library online on Github. Download and get experienced by yourself.
D3.js is a library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS. D3 allows you to bind arbitrary data to a Document Object Model (DOM). It is useful for creating smooth transitions and interaction. D3 is simple, popular and flexible. It provides the freedom to design the right visual interface for your data. Download and use by yourself. It is an awesome library.