GreenSock
GreenSock (GSAP) is a high-performance JavaScript animation library used to create smooth, complex animations for web interfaces. It provides a robust API for animating DOM elements, SVG, canvas, and WebGL with precise control over timing, sequencing, and easing. It is widely adopted for building interactive websites, games, and data visualizations due to its speed and cross-browser compatibility.
Developers should learn GreenSock when they need to create advanced, performant animations that go beyond basic CSS transitions, such as complex sequences, physics-based motion, or scroll-triggered effects. It is particularly useful for web projects requiring high interactivity, like marketing sites, product demos, or educational tools, as it handles browser inconsistencies and offers a rich feature set for fine-tuning animations.