Choosing the right framework (comparison) depends on initial goals, project requirements, general framework functionality and how it can be applied in each particular case.
Despite the fact that BabylonJS doesn’t support WebVR, it makes app development straightforward and easy-to-understand (tutorials). Furthermore, it can be a perfect fit for complex, high-load and awesome software solutions.
Blend4Web is an open source framework for showcasing products, e-learning, game development, advertising and web design. The framework is used for authoring WebVR-based applications such as heritage reconstruction and games.