According to http://flex.org/tour:
Tour de Flex is a desktop application for exploring Flex capabilities and resources, including the core Flex components, Adobe AIR and data integration, as well as a variety of third-party components, effects, skins, and more.
Tour de Flex has three primary purposes:
- Provide non-Flex developers with a good overview of what is possible in Flex in a “look and see” environment
- Provide Flex developers with an illustrated reference tool
- Provide commercial and non-commercial Flex developers a place to showcase their work
Download location: http://flex.org/tour