Open Source JavaScript Animation Software

Reveal animations when you scroll. Easily customize animation settings like style, delay, length, offset, iterations, etc. By default, you can use it to trigger animate.css animations. But you can easily change the settings to your favorite animation library. Smaller than other JavaScript parallax plugins, like Scrollorama (they do fantastic things, but can be too heavy for simple needs). Super simple to install, and works with animate.css, so if you already use it, that will be very fast to setup. Fast execution and lightweight code, the browser will like it. It just take seconds to install and use WOW.js! Once purchased on UpLabs, you’ll receive a commercial license PDF and be all set to use WOW.js in your commercial applications. If you want to use WOW.js to develop commercial sites, themes, projects, and applications, the Commercial license is the appropriate license. With this option, your source code is kept proprietary.

Effeckt.css is a showcase and toolkit of high-performance UI transitions and animations for the web. It catalogs common interaction patterns—button states, list reveals, modals, off-canvas menus, and page transitions—implemented with CSS transforms and opacity for smooth, GPU-friendly motion. The project focuses on practical details such as using compositing-friendly properties, keeping DOM structures lean, and providing hooks so JavaScript can toggle classes without micromanaging animation state. Each effect is isolated, documented, and demoed, allowing designers to copy just what they need rather than dragging in a monolithic framework. By standardizing names and behaviors, it helps teams keep motion design consistent across a product while remaining easy to theme. The library doubled as a learning resource during the rise of CSS animations, showing how to achieve polished interactions without heavy JavaScript.

One of the best navigation patterns on Android. This is a very simple JavaScript-only implementation of it for React Native. Animations are very important to create a great user experience. Stationary objects must overcome inertia as they start moving. Objects in motion have momentum and rarely come to a stop immediately. Animations allow you to convey physically believable motion in your interface. The Animated API is designed to concisely express a wide variety of interesting animation and interaction patterns in a very performant way. Animated focuses on declarative relationships between inputs and outputs, with configurable transforms in between, and start/stop methods to control time-based animation execution.