[rewq4321]

The engine absolutely is open source, and there are no clauses pertaining to where the code must be hosted.

Their particular IDE may be closed-source, but the engine is not tied to it.

IIRC playcanvas was started by ex-mozilla people.

I played around with the engine a while ago and was quite impressed by the all-in-one-ness of it.

[ovenchips]

PlayCanvas was started by ex-EA/Activision/Sony devs. But Mozilla partnered with PlayCanvas to open source the engine and later launch Firefox's WebGL 2 support with the After the Flood demo: http://aftertheflood.playcanvas.com/

[rewq4321]

Ahh, thank you for the correction.