Efflex is a set of Open Source Designer Effects for Adobe Flex. All these effects are very beautifully handled and coded. We are much familiar with these effects in other languages / programs but how about getting the source code for such handy effects with Adobe Flex.
These effects are created by Stephen Downs who has a background in building applications for Flash Platform. As these are Open source effects You can download the code and you can use it in your personal and commercial applications.
Website: http://code.google.com/p/efflex/downloads/list
Demo: http://www.efflex.org/FlexEffectsExample.html