(Download the software from http://toolkitfordart.github.io/, where you can also find the documentation.)

Flash Professional (http://www.adobe.com/products/flash.html) is Adobe's most popular authoring tool for creating vector graphics, animations, games, and rich Internet applications for the Web. Previously, its content was exported to the SWF file format, which could be viewed only with the Flash Player plugin. But at Google I/O 2013, Adobe announced their new and open-sourced toolkit for Dart, a plugin for Flash Professional CC that allows developers to export their animations and games to Dart code, HTML5, and the StageXL library. This feature allows Flash web designers and animators to use the tool they love (Flash Pro) and at the same time, create content for the modern Web by publishing their content to the Dart language and HTML5 APIs.

Most of the animation and drawing functionality of Flash Pro is supported in the toolkit for Dart, such as bitmaps, shapes, movie clips, simple buttons, text fields, filters, masks, and embedded audio. Dart code is generated for stage items, symbols, images and sounds. The developer has to write Dart code for the interactive parts of the content. The toolkit also uses the Dart StageXL library for the Flash runtime. You can find it as an export panel in Flash Professional CC: its output is a functional Dart project, partly being auto-generated code, and you can add your business logic in other code files.