CopperCube 4.0
CopperCube is a full 3D Game development environment with support for WebGL published (in addition to Windows, Mac, Flash and now Android)
The recently released version 4.0 of the IDE (which runs on both Windows and OS X) adds in Android support as well as particle effects. The editor comes with a 14-day trial and comes in two flavors: a $99 Light editor and a $299 Professional edition.
Check out the latest WebGL demos as well as more details at Ambiera.com