AOS is a small library that allows you to animate elements as you scroll down, and up. If you scroll back to top, element will animate to its previous state and is ready to animate again if you scroll down.
jump.js is a small, modern, dependency-free smooth scrolling library. To jump to an element, pass a CSS selector as a string. To scroll from the current position, pass a number of pixels, positive or negative. Jump.js is under MIT licence.
elevator.js is a “back to top” button that behaves like a real elevator, by adding elevator music to quietly soothe the awkwardness that can ensue when being smoothly scrolled to the top of the screen.
Elevator.js is a standalone library (no jquery, or the likes) so usage is pretty straight forward. All styling of elements is up to you. Elevator.js only handles the audio management, and the scroll functionality!
ScrollReveal.js is a library to easily reveal elements as they enter the viewport. It’s very small in size, as its weight is roughly 3Kb if minified and gzipped. It has no dependencies, so you don’t need to add other libraries to use it like jQuery. ScrollReveal supports 3d rotation out of the box, but you may want to emphasize the effect by specifying a perspective property on your container.
WOW.js reveals CSS animation as you scroll down a page. By default, you should use it to trigger animate.css animations, but you can easily change the settings to your favourite animation library. It’s easily customizable; you can change the animation settings like style, delay, length, offset, iterations and etc.
Parallax.js is simple, lightweight Parallax Engine that reacts to the orientation of a smart device. Where no gyroscope or motion detection hardware is available, the position of the cursor is used instead.
DoSlide is a light, no dependency and low invasive JS plugin, providing a pattern which switch entire one section at a time. DoSlide can be flexibly configured and has an inner tool library like jQuery, you can implement specific requirements quickly by taking advantage of it.