Hammer is an open-source library that recognizes gestures made by touch, mouse and pointer events. It supports complex multi-touch gestures like rotate, pinch and swipe, which makes it possible to develop web apps that can rival the experience that native applications provide.
Animateplus is a CSS and SVG animation library. It works very well on mobile devices, and is perfect for smooth landing pages. You can configure the duration, easing and delay before the animation starts.
Gradient animator is an online tool that helps you generate animated CSS gradients. After you choose options like colors speed and angles, just copy the code that the website gives you and paste it into your stylesheet.
OhSnap! Is a simple notification library for jQuery/Zepto. It is designed to work well in both desktop and mobile browsers. It is very easy to integrate into an existing website. To customize it you only need to edit a single .css file.
SpaceBase is a Sass-based framework that combines the best responsive practices into ready-to-use boilerplate project. It contains must-haves like a mobile-friendly grid, common ui components like buttons and lists, help classes and mixins and more.
Egg.js is a simple library that helps you add a web easter egg by watching the user’s key strokes. You can add a hook that will run after any egg code is triggered. You can use this to send out a tweet that someone found your easter egg.