After conducting research and analysis, I have identified two popular WebGL libraries: Three.js and Babylon.js.

Three.js is a cross-browser JavaScript library used to create and display animated 3D computer graphics in web browsers. It is built on top of WebGL and offers a simple API to create 3D graphics.

Babylon.js is a powerful, open-source, and JavaScript-based 3D game engine that uses WebGL for rendering. It provides advanced features such as particles, physics engine, post-processing, and GUI.

Both Three.js and Babylon.js are popular libraries for working with WebGL. Which one to use depends on the specific needs of the project.

The popular WebGL libraries for getting started are Three.js and Babylon.js. 

Both are powerful libraries that offer easy-to-use APIs for creating 3D graphics and games in web browsers.
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