Three.js vs Whitestorm.js

Effects: Anaglyph, cross-eyed and parallax barrier.
Scenes: add and remove objects at run-time; fog
Cameras: perspective and orthographic; controllers: trackball, FPS, path and more
Animation: armatures, forward kinematics, inverse kinematics, morph and keyframe
Lights: ambient, direction, point and spot lights; shadows: cast and receive
Materials: Lambert, Phong, Standard, smooth shading, textures, PBR and more
Shaders: access to full OpenGL Shading Language (GLSL) capabilities: lens flare, depth pass and extensive post-processing library
Objects: meshes, particles, sprites, lines, ribbons, bones and more - all with Level of detail
Geometry: plane, cube, sphere, torus, 3D text and more; modifiers: lathe, extrude and tube
Data loaders: binary, image, JSON and scene
Utilities: full set of time and 3D math functions including frustum, matrix, quaternion, UVs and more
Export and import: utilities to create Three.js-compatible JSON files from within: Blender, openCTM, FBX, Max, and OBJ
Support: API documentation, public forum
Examples: Over 150 files of coding examples plus fonts, models, textures, sounds and other support files

The documentation is detailed, providing clear explanations and code samples of the various features. There are also hundreds of examples available.

Thanks to the recently introduced forum, it is easy to find a community of helpful developers.

With the introduction of the new MeshStandardMaterial, three.js support physically based rendering (PBR) out of the box allowing for real life quality material and lighting.

Three.js has importers for most of the industry standard files format (obj, mtl, fbx, 3ds, gltf, collada, babylon, playcanvas, stl, vrml, draco and many more), making it easy to author assets in your favourite modelling software and import them for use them in three.js.

Three.js has great project health, with activity on Github daily for bug fixes and new features.

Three.js offers a canvas renderer as a fallback when WebGL is not available.

Three.js support many special effects and post-processing filters including particles, lensflare, sprites, real time reflection and refraction and even area based lighting.

The core of the three.js system is kept to a minimum to reduce file size, however there are also hundreds of extensions maintained in the offical repo on github, along with many free textures, fonts and models. You can find them all here.

Three.js official documentation provides plenty of well-written examples with a wide variety of tutorials written by the community available that you can find by doing a google search.

It uses Physi.js library for calculating physics of 3D shapes with WebWorkers technology that allows to make rendering an calculating physics in multiple threads.

Framework does rendering automatically and doesn't need function to be called for it. Functionality like resize function can be called automatically by setting additional parameters such as autoresize: true.

Framework supports plugins & components made by other users. You need to include them after whitestorm.js and follow provided instructions.

Framework is written with using latest features of ECMAScript 6 and ECMAScript 7 (beta) features and compiled with Babel.

Framework use JSON-like structure for creating objects by inputed data and adding them to 3d world.