Siema
Siema - Lightweight and simple carousel in pure JavaScript
Kute.js
KUTE.js is a native Javascript animation engine featuring badass performance, morphSVG, drawSVG, 2D and 3D transforms, SVG transforms, colors, as well as other CSS3 properties or presentation attributes.
Jimp
An image processing library written entirely in JavaScript for Node, with zero external or native dependencies.
Bespoke.js
DIY Presentation Micro-Framework
Snabbt.js
Fast animations with javascript and CSS transforms
Interact.js
Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE8+)
Chartkick
Create beautiful Javascript charts with one line of Ruby
Toolbar
A tooltip style toolbar jQuery plugin
jQuery UI Touch Punch
A duck punch for adding touch events to jQuery UI
Weld
Template antimatter for Node.js (Browsers too!)
Webix
Stable releases of Webix UI - JavaScript library for building mobile and desktop web apps
Typeit
The most versatile JavaScript typewriter effect library on the planet.
Swing
A swipeable cards interface. The swipe-left/swipe-right for yes/no input. As seen in apps like Jelly and Tinder.
Pace
Automatically add a progress bar to your site. #hubspot-open-source
Openui5
OpenUI5 lets you build enterprise-ready web applications, responsive to all devices, running on almost any browser of your choice
Logerr
Playing with console errors, experimental project.
JS Signals
Custom Event/Messaging system for JavaScript inspired by AS3-Signals