Pure ActionScript... Pure Development Bliss!
The Aspire UI Components toolkit is a collection of ActionScript 3.0 (AS3) classes for building flexible and lightweight user interface elements in Adobe Flash applications.
Key features of the components include easy skinning using PNG image files, multiple ready-to-use themes, automatic tab focus ordering, extensive text styling capabilities, and flexible layout containers.
This is a pure AS3 library with no dependency on the Adobe Flex framework.