A+

the webgl extensions used probably aren't available in this version, might still be behind a flag as wangchow mentioned

there is also http://clappr.io

I find that landing page truly frustrating. I can't do anything besides watch the background video and "Star" them on Github.

I don't know if it was because I'm not signed in to github but by clicking star I ended up in their repo. Still, while it's laudable that you might have just one clear button a la google so there's focus, this can be somewhat confusing.

I wrote a library to play these videos: https://github.com/thiagopnts/video-360

Very impressive... Do you have a toolset for converting regular video to 360?

Dude, that's incredible.