The parade of Flash API is presented here.
Papervision 3D
Papervision is most popular open source realtime 3D engine for Flash.
Download
http://code.google.com/p/papervision3d/
Sandy3D
Sandy3D is another open source 3D API for flash AS2,AS3.
Download
http://flashsandy.org/download
Away3D
Away3D is next generation realtime 3D engine for Flash. Away3D is very advanced and uses GPU rendering,
Download
http://away3d.com/downloads
Facebook API
Facebook API for Flash, Flex and AIR.
Download
http://code.google.com/p/facebook-actionscript-api/
More Resource
http://www.adobe.com/devnet/facebook.html
Tweener API
Tweener class is useful for creating code based dynamic animations and transitions.
Download
http://code.google.com/p/tweener/
Documentation
http://hosted.zeh.com.br/tweener/docs/en-us/
Greensock Tweening Platform
Amazing code based tweening platform for all. This is having various options like TweenNano, TweenLite,
Document, Downloads and Resources
http://www.greensock.com/v11/
Box2D API
Box2D is very popular physics engine for flash game developers.
Download
http://sourceforge.net/projects/box2dflash/
Documentation
http://www.box2dflash.org/docs/
Stardust Particle Engine
Stardust is wonderful particle engine for flash. It is useful for creating 2D and 3D particle effects. Some of my personal favorites are waypoints, exploding image and star fireworks.
Download and Documentation
http://code.google.com/p/stardust-particle-engine/
amMAP
AmMap is a tool that lets you have good-looking and functional maps on your website. The tool use AdobeFlash technology for a compelling online experience. You can display maps in any HTML page (web page), or inside another Flash movie. You can also use the maps in PowerPoint presentations.
Download
http://www.ammap.com/download
Documentation
http://www.ammap.com/docs/
Giggya API
Giggya is a perfect tool for sharing your flash content on social network like Facebook, Twitter, LinkedIn, Yahoo!,
Google Buzz, Windows Live, opened etc.
Documentation
http://developers.gigya.com/
WiiFlash API
Ever think of playing flash games with Wiimote? If yes, than this is the API for that. This consist of two parts WiiFlash Server (for getting input from Wiimote and send it to Flash and vice versa) and WiiFlash ActionScript API (for using Wiimote events in Flash)
Download
http://code.google.com/p/wiiflash/
FLARToolKit
FLARToolKit is a AS3 version of ARToolKit, which is a software library for building Augmented Reality (AR) applications. FLARToolKit recognize the marker from input image and calculate its orientation and position in 3D world.
Download, Resource, Examples
http://www.libspark.org/wiki/saqoosha/FLARToolKit/en
Player.IO
Player.IO is a support tool service for multiplayer game, database service, connectivity for Facebook, solution for in-game payment. It supports AS3, .NET and Unity3D. It’s one stop solution for those who are looking for affordable multiplayer game serving.
Download
http://playerio.com/download/
Documentation
http://playerio.com/documentation/
Come2Play
Come2Play platform is for single player as well as multiplayer. It’s having features like leader board, viral messaging, in-game money, banner ads, and lobby for multiplayer games.
Download and Resources
http://www.come2play.com/developer.asp
Source: Flash And Flex Developers' Magazine, May 2011.
