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/
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/
Animation Tweening Kits
- 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/
- TweenLite
http://blog.greensock.com/tweenliteas3/
- TweenMax
http://blog.greensock.com/tweenmaxas3/
- Tweensy
http://www.lostinactionscript.com/blog/index.php/2008/08/31/as3-tween-engine-tweensy-preview/
- 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/
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/
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/
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/
- Gaia
http://www.gaiaflashframework.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/
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/