Here are some popular canvas libraries:

1. Fabric.js: This is a powerful and easy-to-use library for working with HTML5 canvas. It provides a variety of tools for creating interactive graphics and animations.
2. Konva.js: This is a 2D drawing library that provides a simple and intuitive API for creating complex shapes and animations on canvas. It's optimized for mobile devices and has excellent performance.
3. Paper.js: This is a vector graphics library that allows you to create complex shapes and illustrations with ease. It provides a variety of tools for working with paths, curves, and shapes, and supports both raster and vector graphics.
4. Three.js: This is a 3D graphics library that provides tools for creating and animating complex 3D scenes in the browser. It's ideal for creating games and interactive experiences.
5. EaselJS: This is a library that makes working with HTML5 canvas simple and intuitive. It provides a familiar display list API, similar to Flash, that makes it easy to create interactive graphics and animations.
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