3D Engines

* Papervision3D
http://blog.papervision3d.org/
* Away 3D
http://www.away3d.com/
* Sandy 3D
http://www.flashsandy.org/
* Alternativa Platform
http://blog.alternativaplatform.com/en/
* FIVe3D
http://five3d.mathieu-badimon.com/
* WireEngine3D (we3d) - A lightweight and fast 3D Engine for Flash 8/9.
http://osflash.org/we3d/
* Sharikura
http://temp.roxik.com/datas/physics/
* Infinity3d - In Russian
http://www.infinity3d-engine.com
* AS3Dmod - A cross-engine 3d modifier library for Flash
http://code.google.com/p/as3dmod/

3D Game Engines

* PaperWorld 3D
http://paperworld3d.com/

3D Animation Framework

* Cast3D
http://www.cast3d.org/

3D Physics Engines

* WOW-Engine
http://seraf.mediabox.fr/wow-engine/
* jiglibflash
http://www.jiglibflash.com/blog/

Augmented Reality

* FLARToolkit
http://www.libspark.org/wiki/saqoosha/FLARToolKit/en
* FLARManager
http://words.transmote.com/wp/flarmanager/
* ARtisan
http://onezerothrice.com/artisan/

Animation Tweening Kits

* Desuade Motion Package - A breakthrough AS3 library that combines keyframe-sequencing, physics, and tweening.
http://desuade.com/dmp
* TweenLite
http://blog.greensock.com/tweenliteas3/
* TweenMax
http://blog.greensock.com/tweenmaxas3/
* Tweener - A class for creating tweens in actionscript 2 and 3 - because there’s infinity between 0 and 1.
http://code.google.com/p/tweener/
* Tweensy
http://www.lostinactionscript.com/blog/index.php/2008/08/31/as3-tween-en...
* TweensyZero - A light weight version of Tweensy.
http://code.google.com/p/tweensy/wiki/TweensyZero
* GoASAP (ActionScript Animation Platform)
http://www.goasap.org/
* AS3 Animation System 2.0
http://www.boostworthy.com/blog/?p=170
* Animation Package
http://www.alex-uhlmann.de/flash/animationpackage/
* KitchenSync - KitchenSync is an ActionScript 3.0 library for sequencing animations and other time-based actions.
http://code.google.com/p/kitchensynclib/
* Gyro - A tween and animation library for ActionScript 3.
http://code.google.com/p/gyro-actionscript-animation/
* gTween
http://www.gskinner.com/blog/archives/2008/08/gtween_a_new_tw.html
* HydroTween + HydroSequence (based on GoASAP)
http://blog.hydrotik.com/2008/07/19/hydrotween-hydrosequence-rev32/
* AS3 Easing
http://www.uza.lt/codex/as3-easing/
* Twease
http://code.google.com/p/twease/
* BetweenAS3
http://www.be-interactive.org/works/20090428/slide_betweenas3.html
* ByteTween - Light weight engine (focusing in low Kb increase and not being a do-it-all engine).
http://code.google.com/p/thelaboratory-tween/
* Eaze - Blazing fast, chainable and compact Flash AS3 tweening library
http://code.google.com/p/eaze-tween/
* Actuate - Tween library for Actionscript 3
http://code.google.com/p/actuate/

2D Physics Engines

* APE (Actionscript Physics Engine)
http://www.cove.org/ape/index.htm
* Box2DFlashAS3
http://box2dflash.sourceforge.net/
* FOAM - 2D Rigid Body Physics Engine.
http://code.google.com/p/foam-as3/
* glaze - 2D Rigid Body Dynamics & Game Engine for Actionsctipt 3.
http://code.google.com/p/glaze/
* motor2
http://lab.polygonal.de/motor_physics/
* Fisix Engine
http://www.fisixengine.com/default.asp
* PopShapes
http://lab.andre-michelle.com/physics-engine/
* Collision Detection Kit
http://coreyoneil.com/portfolio/index.php?project=5
* QuickBox2D - A mini-library created to work with Box2DFlashAS3
http://actionsnippet.com/?page_id=1391

Security

* AS3Crypto
http://crypto.hurlant.com/

Audio Libraries

* Popforge - ActionScript 3 code sandbox for various packages.
http://code.google.com/p/popforge/

Particle Systems

* FLiNT
http://flintparticles.org/
* Partigen (Not free)
http://desuade.com/products/partigen/
* Pulse Particle System - A general purpose AS3 particle system.
http://www.rogue-development.com/pulseParticles.html
* Emitter - ActionScript 3.0 particle FX engine.
http://code.google.com/p/emitter/
* Stardust - ActionScript 3.0 Particle engine.
http://code.google.com/p/stardust-particle-engine/
* Orion - An all around simple and flexible particle generator.
http://blog.coursevector.com/orion

Data Visualization

* Flare - Create interactive data visualizations for the web.
http://flare.prefuse.org/

Loading Kits

* BulkLoader - A library for managing multiple loadings with Actionscript 3 (AS3).
http://code.google.com/p/bulk-loader/
* Masapi
http://code.google.com/p/masapi/
* QueueLoaderAS3
http://code.google.com/p/queueloader-as3/
* SomaLoader
http://www.soundstep.com/blog/downloads/somaloader/

OOP Frameworks

* Cairngorm
http://opensource.adobe.com/wiki/display/cairngorm/Cairngorm
* PureMVC
http://puremvc.org/
* Mate
http://mate.asfusion.com/
* Swiz - Brutally simple micro-architecture for Rich Internet Application development with Adobe Flex
http://code.google.com/p/swizframework/
* HydraMVC - A rewrite of the PureMVC API exclusively for Flex
http://www.hydramvc.com/
* RobotLegs - An Architectural (or Structural) Action Script 3 Framework
http://shaun.boyblack.co.za/blog/category/robotlegs/
* Gaia
http://www.gaiaflashframework.com/
* LayerGlue - A framework aimed at rapid website development for Flash & Flex.
http://www.layerglue.com
* Slide
http://code.google.com/p/flex-slide/
* Guasax
http://www.guasax.com/
* VEGAS
http://code.google.com/p/vegas/
* Parsley
http://www.spicefactory.org/parsley/
* LowRa - AS3 version of pixlib.
http://code.google.com/p/lowra/
* CASA Lib - An Open Source Code Library for ActionScript 2.0 & 3.0
http://casalib.org/
* FlashMVC - A flexable lightweight framework engine for AS3.
http://www.flashmvc.com/
* Hive - A state-based MVC framework for AS3.
http://code.google.com/p/as-hive/
* Soma and SomaUI - An AS3 MVC framework and software to generate an AS3 flash site based on it.
http://www.soundstep.com/blog/downloads/somaui/
* Spring Actionscript - An offshoot of the Java-based Spring Framework.
http://www.springactionscript.org/

Other APIs and libraries

* facebook-actionscript-api - Actionscript API for the Facebook platform.
http://code.google.com/p/facebook-actionscript-api/
* as3facebooklib - ActionScript 3.0 API for Facebook.
http://code.google.com/p/as3facebooklib/
* Yahoo Maps API
http://developer.yahoo.com/flash/maps/
* corelib - ActionScript 3.0 library for several basic utilities (JPEG Encoding, MD5 Hashing, JSON Serialization).
http://code.google.com/p/as3corelib/
* as3flexunitlib - ActionScript 3.0 framework for unit testing.
http://code.google.com/p/as3flexunitlib/
* as3flickrlib - ActionScript 3.0 API for Flickr.
http://code.google.com/p/as3flickrlib/
* as3mapprlib - ActionScript 3.0 API for Mappr.
* http://code.google.com/p/as3mapprlib/
* as3syndicationlib - ActionScript 3.0 library for handling syndication feeds.
http://code.google.com/p/as3syndicationlib/
* as3odeolib - ActionScript 3.0 API for Odeo.
http://code.google.com/p/as3odeolib/
* as3youtubelib - ActionScript 3.0 API for YouTube.
http://code.google.com/p/as3youtubelib/
* as3ebaylib - ActionScript 3.0 API for eBay.
http://code.google.com/p/as3ebaylib/
* as3awss3lib - ActionScript 3.0 library for interacting with Amazon S3.
http://code.google.com/p/as3awss3lib/
* as3soundeditorlib - Actionscript 3.0 library for sound playback, spectrum display, and cue point display.
http://code.google.com/p/as3soundeditorlib/
* as3ds - AS3 Data Structures For Game Developers.
http://code.google.com/p/as3ds/
* as3notificationlib - A notification framework written in AS3 for the Adobe Integrated Runtime (AIR).
http://code.google.com/p/as3notificationlib/
* as3preferenceslib - An AIR library for storing preferences.
http://code.google.com/p/as3preferenceslib/
* as3nativealertlib - An AIR alert that appears in a native window.
http://code.google.com/p/as3nativealertlib/
* ASCOLLADA - actionscript library for parsing Collada files.
http://code.google.com/p/ascollada/
* FZip - An Actionscript 3 class library to load, modify and create standard ZIP archives.
http://codeazur.com.br/lab/fzip/
* lastfm-as3 - Actionscript 3.0 API to access the Last.fm web services.
http://code.google.com/p/lastfm-as3/
* MapQuest
http://company.mapquest.com/mqbs/4a.html
* Modest Maps - A display and interaction library for tile-based maps in Flash.
http://www.modestmaps.com/
* as3cards - An ActionScript 3.0 card engine and example games.
http://code.google.com/p/as3cards/
* flexircclient - ActionScript 3 based IRC library.
http://code.google.com/p/flexircclient/
* AsWing - A GUI framework and library that allows programmers to make their flash application(or RIA) UI easily.
http://www.aswing.org/
* as3httpclient - ActionScript 3 utils/classes to extend HTTP/HTTPS APIs in Flash Player 9 (onwards).
http://code.google.com/p/as3httpclient/
* DistortionTweener
http://evolve.reintroducing.com/2007/11/18/as3/as3-distortiontweener/
* ascanvas - An adapter of HTML Canvas and fl.display.Graphics
http://code.google.com/p/ascanvas/
* dopplr-as3 - actionscript 3 code for accessing data from dopplr.com’s api.
http://code.google.com/p/dopplr-as3/
* FC64 - an Open-Source Commodore 64 Emulator.
https://mirror1.cvsdude.com/trac/osflash/fc64/
* FFilmation - AS3 Isometric Engine
http://www.ffilmation.org/website/
* Google Maps API
http://code.google.com/apis/maps/documentation/flash/intro.html
* FVNC - VNC Client for Flash Player 9 and above.
http://osflash.org/fvnc
* AS3 Parametric Curve Library
http://www.algorithmist.net/as3pc.html
* AWI - AMFPHP-WordPress Integration.
http://www.klr20mg.com/awi/ (in Spanish)
* as3webservice - Open-source Webservice class implementation in AS3 for Flash CS3 IDE.
http://code.google.com/p/as3webservice/
* as3jayrock - AS3 wrapper for Jayrock communication.
http://code.google.com/p/as3jayrock/
* ASAP Library - A library for the development of maintainable, multi-movie, interactive applications.
http://asaplibrary.org/
* Wordpress XML-RPC API
http://blog.absentdesign.com/?page_id=22
* as3maillib - An ActionScript 3 email library.
http://code.google.com/p/as3maillib/
* AlivePDF - ActionScript 3 Open-Source PDF Library – 100% client side PDF generation.
http://alivepdf.bytearray.org/
* SWFAddress - Deep linking for Flash.
http://www.asual.com/swfaddress/
* Flash Camouflage - Skinning framework for AS3.
http://code.google.com/p/flash-camouflage/
* Flexlib - Open Source Flex Component Library.
http://code.google.com/p/flexlib/
* Yahoo Astra Flash Components
http://developer.yahoo.com/flash/astra-flash/
* as3-fullscreen-lib - A small lib used for scalling content to the full size of the browser.
http://code.google.com/p/as3-fullscreen-lib/
* coordy - An Actionscript 3 Layout Framework.
http://code.google.com/p/coordy/
* vectorvision - Vectors in papervision3D.
http://code.google.com/p/vectorvision/
* WiiFlash - Communication between the Wiimote and Flash.
http://code.google.com/p/wiiflash/
* Stats - A simple info box that will help you monitor your code performance.
http://code.google.com/p/mrdoob/wiki/stats
* twitterscript - Twitter API in ActionScript
http://code.google.com/p/twitterscript/
* oauth-as3 - OAuth Actionscript library (useful for Twitter clients).
http://code.google.com/p/oauth-as3/
* OAuth - AS3/Flex OAuth Library (useful for Twitter clients).
http://github.com/srohde/OAuth/tree/master
* NabaztagAPI - Nabaztag API wrapper for Actionscript 3.
http://www.iotashan.com/NabaztagExplorer/
* SWFObject - Standards-friendly method to embed Flash content using one JavaScript file.
http://code.google.com/p/swfobject/
* tweetr - AS3 Twitter API
http://code.google.com/p/tweetr/
* myLib - A powerful open source framework designed for advanced components programming with Adobe Flash AS3 projects.
http://mylib.samystudio.net/
* as3scribdlib - ActionScript 3.0 API for Scribd
http://code.google.com/p/as3scribdlib/
* PushButton Engine - An Open Source, Flash game engine and framework that’s designed for a new generation of games.
http://pushbuttonengine.com/
* flixel - A collection of Actionscript 3 files that helps organize, automate, and optimize Flash games.
http://flixel.org/
* FDOT - A collection of ActionScript 3 classes that make hard things easier.
http://onflash.org/ted/2009/08/fdot-making-hard-things-easier.php
* xpath-as3 - An XPath implementation for ActionScript 3.0
http://code.google.com/p/xpath-as3/
* DirectorAS3 - Library for SlideShowPro Director
http://www.tuftandco.net/DirectorAS3/
* SWX - The Native Data Format for Adobe Flash
http://code.google.com/p/swx-format/
* openplatform-flash - AS3 client library for The Guardian Open Platform
http://code.google.com/p/openplatform-flash/
* ARTionscript - An AS3 ‘Generative Art’ Framework
http://artionscript.com/
* ffffound-as3-api - FFFFOUND! (unofficial) AS3 API
http://toki-woki.net/blog/p336-ffffound-as3-api
* colormunch - Actionscript (AS3) library for the Adobe Kuler API
http://code.google.com/p/colormunch/
* GpxAS3 - A library for parsing and manipulating GPX (GPS Exchange Format) files.
http://github.com/ryanstewart/GpxAS3/tree
* gaforflash - Google Analytics Tracking For Adobe Flash
http://code.google.com/p/gaforflash/
* minimalcomps - Minimal ActionScript 3.0 code only UI components (Keith Peters)
http://code.google.com/p/minimalcomps/
* HYPE Framework - A collaborative visual framework (Branden Hall and Joshua Davis)
http://hype.joshuadavis.com/
* TempoLite - A small, efficient media library
http://blog.coursevector.com/tempolite

http://www.adrianparr.com/?cat=7