CreateJS is a suite of JavaScript libraries designed to facilitate the development of rich, interactive web content. It provides tools for working with graphics, animations, and sound, making it easier for developers to create engaging experiences on the web. The suite includes several libraries, such as EaselJS for graphics, TweenJS for animations, SoundJS for audio management, and PreloadJS for loading assets. These libraries work together seamlessly, allowing developers to build complex applications without needing extensive knowledge of lower-level programming. CreateJS is particularly popular for creating games, interactive presentations, and other multimedia projects, enhancing the overall user experience on websites.