iScroll is a high-performance, lightweight JavaScript library for enabling smooth scrolling, zooming, panning, and other interactions on web content. It works across desktop, mobile, and smart TV platforms, and is optimized for both modern and older devices. iScroll is ideal for developers who need advanced scrolling features, such as custom scrollbars, infinite scrolling, or parallax effects, without relying on native browser implementations. It is particularly useful for creating complex, interactive web applications or enhancing the user experience on touch-enabled devices.