GSAP, or GreenSock Animation Platform, is a powerful JavaScript library used for creating high-performance animations on the web. It allows developers to animate HTML, CSS, SVG, and canvas elements with ease, providing a simple syntax and extensive features. GSAP is known for its speed and efficiency, making it a popular choice for both simple and complex animations. One of the key benefits of GSAP is its compatibility with various frameworks and libraries, such as React, Vue, and jQuery. It offers a robust set of tools, including timelines and easing functions, which help developers create smooth and visually appealing animations. With a strong community and comprehensive documentation, GSAP is accessible for both beginners and experienced developers.