March 20th, 2008 
Ntt.cc I collected some AS3 Physics Engine projects listed below.If you know others not in following list reply it please.
Box2DFlashAS3 is an open source port of Erin Catto’s powerful c++ physics library Box2D.
a free AS3 open source physics engine written by Seraf ( Jérôme Birembaut ) capable to handle positions in a 3D environment.use Sandy library for all the 3D mathematical computations (matrix, 3D vector, plane). The inner architecture of the engine is also inspired by Sandy’s one.
It is built with many open source kits that are emerging. It can use any of the 3 major flash 3d engines (pv3d, sandy, away3d)
a two-dimensional rigid body physics engine written in ActionScript 3.0.
It is meant as an architectural and mathematical reference for developers interested in physics simulation in the area of game development or otherwise. It trades efficiency for modularity and extensibility.
Here is the author’s blog.
APE (Actionscript Physics Engine) is a free AS3 open source 2D physics engine for use in Flash and Flex, released under the MIT License.
You can see two interest demo at here and here.
Motor Physics is an open source 2D physics engine under the zlib/libpng license.
Revive is an open source 2D physics engine.You can download the source code from here.
Flade (Flash Dynamics Engine) is an open source actionscript 2.0 library for simulating 2D physics using Verlet integration. It currently features rectangular, circular, & wheel primitives, spring & angular constraints, and surfaces composed of line segments, circles, & rectangles. It’s designed primarily for games with a goal of speed and ease of use, and is MTASC -strict compatible.
an Actionscript 3.0 physics engine built for game developers.
The fisix engine is a verlet based physics engine for flash written in Actionscript 3.0. This engine is aimed towards use in games and other relatively cpu intensive real-time applications.
a game and physics engine for Flash,core parts of the physics solver and collision system are based on the C physics engine Chipmunk.
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[...] bsge7: [...]
[...] the rest of this great post here Author: Time: Thursday, March 20th, 2008 at 7:25 am Category: Open Source Comments: You [...]
[...] the rest of this great post here Author: Time: Thursday, March 20th, 2008 at 7:25 am Category: Engine Comments: You can [...]
Flade is AS2 not AS3
@Paulius Uza
Thanks for the heads up. I changed the article title, but left the URL the same.
minidxer
this is very nice engine http://code.google.com/p/glaze/
@kuzyasun
Thanks!
glaze was added.
[...] minidxer kindly collected all physics engines available. [...]
Hello (again!),
I’ve also being having lots of fun with APE. You can read about my exploits here: http://flexmonkey.blogspot.com/2008/04/further-ape-adventures.html
simon
[...] as3 open source projects what I have collected.Some of them have include in the previous article the list of AS2/AS3 Physics Engine(open source + non-open source). Note: listed in no particular [...]
[...] as3 open source projects what I have collected.Some of them have include in the previous article the list of AS2/AS3 Physics Engine(open source + non-open source). Note: listed in no particular [...]
[...] kindly collected all physics engines available. page_revision: 0, last_edited: 1221033403|%e %b %Y, %H:%M %Z (%O ago) edittags history files [...]
[...] physics engine ตัวเดียวจากทั้งหมดที่สร้าง object จาก bitmap หรือ movieclip ได้ [...]
This is *kind of* a physics engine, that it does physics animations, but not a full collision, etc, based engine, but thought it may be helpful to some anyways:
http://desuade.com/dmp