Three.js is the main high level WebGL lib most people seem to be using, also for many MineCraft clones. It's not as web-hostile as Unity. Besides WebGL, it has

Three.js is the main high level WebGL lib most people seem to be using, also for many MineCraft clones. It's not as web-hostile as Unity. Besides WebGL, it has renderers for CSS and 2D canvas too. There are other actively developed Web-friendly WebGL frameworks, like Goo Create, PlayCanvas, BabylonJS and many more.