As GLOW is just a WebGL wrapper it’s possible to use in conjunction with other WebGL libraries, like Three.js
As I’ve developed parts of Three.js and really like it, I’ve added some extras to GLOW to easily get up and running with your own custom GLOW renderer for Three.js. Check out the tutorial here.
Note that it doesn’t support all features just yet, but enough to get going. If you feel like it, please support GLOW by adding more functionality and perhaps compatibility functionality for other WebGL libraries. Fork GLOW here.