Flambe is an engine and asset pipeline for cross-platform multiplayer games.
Written in Haxe, games are compiled to Flash and HTML5, with support for mobile devices. Server-side logic compiles to JS and runs on Node.js, for games that require multiplayer.
Rendering in Flash uses Stage3D, falling back to copyPixels if hardware accelerated Stage3D isn't available. The HTML5 renderer uses canvas, with plans for WebGL support later on