Text Layout Framework Now on Adobe Open Source
The Text Layout Framework is an extensible ActionScript library, built on the new text engine in Adobe® Flash® Player 10 and Adobe AIR 1.5, which delivers advanced, easy-to-integrate typographic and text layout features for rich, sophisticated and innovative typography on the web. The framework is designed to be used with Adobe Flex® or Adobe Flash Professional and is included in Flex 4, code named "Gumbo". Developers can use or extend existing components, or use the framework to create their own text components.
See the feature tour and the online rich text editor demo on Adobe Labs.