Flex roguelike
MMORPG
Exports Flash .FLAs to GPU-friendly formats
Modern AS3 Game Engine
A Flash Molehill (Stage3D) GPU accelerated 2D game engine
DragonBones ActionScript Runtime
DragonBones DesignPanel
A free ActionScript 3 library designed for developing 2D Flash games
The Flixel Power Tools are a set of plug-ins for Flixel 2.5+
Hungry Hero is an open source Flash game built on Starling Framework.
StarlingPunk is a framework built on top the Starling library
flixel is a free Actionscript (Flash) library