Away Builder is an open source workflow tool for the import and editing / optimisation of 3D content for use in web and mobile applications.
It is written in AS3 and is compatible with the Adobe Flash and Adobe AIR platforms.
Away Builder outputs AWD files that can be loaded and displayed inside both Away3D Flash or Away3D Typescript projects.
Source files: https://github.com/awaytools/AwayBuilder
Binary installer: AwayBuilderApplication.air
Live tool: http://awaytools.com/awaybuilder/live-tool/
Tutorials and news: http://www.awaytools.com/awaybuilder