Popmotion.js: Animation engine
Popmotion.js is a great animation engine/library that supports tweening, svg morphing, svg drawing, element staggering and support for three.js.
Popper.js: Tooltip library
Popper.js is a tooltip library that allows you to build spatially aware tooltips with programmable boundaries.
ProgressBar.js: SVG progress bars
ProgressBar.js allows you to create and animate responsive SVG progress bars.
Push.js: Desktop push notifications
Push.js is a push notification library for all modern browsers with graceful fallbacks for older unsupported browsers.
Quill.js: WYSIWYG text editor
Quill.js is a well supported rich text WYSIWYG editor.
RandomColor.js: Color generator
RandomColor.js is a random color generator which generates only brighter, more visually pleasing colors.
Rellax.js: Parallax scrolling
Rellax.js is a lightweight parallax scrolling library for desktop browsers.
Reqwest.js: Ajax API
Reqwest.js is a http request library with support for xmlHttpRequest, JSONP, CORS, and CommonJS Promises.
Rome.js: Date & time picker
Rome.js is a customizable date and time picker.
ScrollTrigger.js: Animate on scroll
ScrollTrigger.js fires animations on HTML elements as you scroll via CSS classes.
Seen.js: 3D scenes
Seen.js is a library for rendering simple 3D scenes as HTML canvas and SVG.
Segment.js: Animate SVG paths
Segment.js is a simple library for animating SVG paths.
Select.js: Styleable dropdowns
Select.js is a library for generating customizable select dropdowns.
Shepherd.js: Guided notifications
Shepherd.js guides users through your web application with programmable steps and instructions.
SnapSVG.js: SVG animation library
SnapSVG.js is a creative SVG animation library that allows you to add motion and life to SVG's.
Socialite.js: Social sharing buttons
Socialite.js is a library for adding asynchronous social buttons.
Sortable.js: Sortable content
Sortable.js is a drag and drop library for re-ordering HTML content.
Spin.js: Customizable loader animation
Spin.js creates efficient loader animations on the fly with HTML and CSS keyframes.
Starability.css: Star ratings
Starability.css is an accessible star rating library with optional CSS animations.
SweetAlert.js: Alert replacement
SweetAlert.js is a refreshing take on the default browser alert window.
SweetAlert2.js: Alert replacement
SweetAlert2.js is a supported fork of the original SweetAlert.js. SweetAlert.js is a refreshing take on the default browser alert window.
Swiper.js: Mobile first slider
Swiper.js is a comprehensive mobile first slider library with native IOS behaviour.
Timesheet.js: Generate timesheets
Timesheet.js is a library for generating visual timesheets from JSON arrays.
Tingle.js: Modal windows
Tingle.js is a modal window library powered by CSS transitions.