SiteMotion & Animation · Animation engines
Declarative animation library driven entirely by HTML data attributes, letting non-JS authors wire triggers to CSS animations.
Why it’s a gem
Zero-JS authoring model that still works for CMS and no-code handoffs.
Declarative motion-graphics toolbelt for bursts, shape swirls and custom timelines; built for particle-style UI flourishes, not tweening DOM.
Functional, framework-agnostic motion primitives — springs, decay, keyframes, inertia — usable as building blocks under any renderer.
3KB Promise-based animation module for CSS and SVG properties, using requestAnimationFrame with no dependencies or plugin system.
Hybrid engine combining the Web Animations API with a JS spring runtime, shipping React, Vue and vanilla bindings.
ES6 tweening engine that interpolates numbers, colors, vectors and objects with a chainable API and no DOM assumptions.
Timeline-based animation engine covering CSS, SVG, DOM attributes and JS objects; v4 rewrote it into tree-shakeable modules.