I have developed a WebGL Joint And Object (JOA) Framework. :P
It is designed to be used by people who want to create WebGL projects without having to know a lot about what happens in at the WebGL level. No need to know about shaders, binding or buffers.
The framework allows you to define objects (or parts), link them together to and then move and rotate them while keeping true to their linked relationship.
The framework has support for animation and keyboard handling.
It contains everything you need to start making 3D scenes in WebGL. No other downloads, besides a WebGL compatible browser, are necessary.
A nice example of a human figure with bendable parts and animation is provided.
The framework can be downloaded at: