Emotion vs. Headless UI vs. React vs. Velocity.js Comparison Chart

​Headless UI is a library of completely unstyled, fully accessible UI components designed to integrate seamlessly with Tailwind CSS. It offers a range of components for both React and Vue. These components are built with accessibility in mind, adhering to WAI-ARIA design patterns and providing full keyboard navigation support. Because they are unstyled by default, developers have complete control over the look and feel, allowing for easy customization to match any design system. Headless UI components expose state information through data attributes and render props, enabling developers to conditionally apply styles based on component states such as focus, open, selected, or disabled. This approach ensures that the components are both flexible and accessible, making them suitable for building custom, high-quality user interfaces. With Headless UI, developers can create complex UI elements like modals, dropdowns, and tabs without sacrificing accessibility or design flexibility.

Velocity is an animation engine with the same API as jQuery's animate. It works with and without jQuery. It's incredibly fast, and it features color animation, transforms, loops, easings, SVG support, and scrolling. It is the best of jQuery and CSS transitions combined. Download Velocity, include it on your page and replace all instances of jQuery's animate with velocity. You will immediately see a performance boost across all browsers and devices, especially on mobile. Velocity works everywhere, back to IE8 and Android 2.3. Under the hood, it mimics jQuery's queue, and thus interoperates seamlessly with jQuery's animate, fade, and delay. Since Velocity's syntax is identical to animate, your code doesn't need to change. JavaScript and jQuery are falsely conflated. JavaScript animation, which Velocity uses, is fast; it's jQuery that's slow. Although Velocity works alongside jQuery, it uses its own animation stack that delivers its performance.