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Here is a good example:

http://www.joshuagranick.com/blog/2012/04/12/html5-pirate-pi...

It's a Bejeweled clone that has been published in the Amazon Appstore, Google Play, BlackBerry App World, the webOS App Catalog and also compiles for iOS, Flash, Windows, Mac, Linux and HTML5

The new release of the Stormpulse mapping client is written in haxe with a flash deployment on the web and an iOS app in the app store. It is non-trivial. ;)

http://try.haxe.org/#655c1

You can compile this example to both Flash and JS online.

If you install Haxe and NME (http://haxenme.org), you can also compile it to iOS, Android, WebOS, BlackBerry, as well as desktop Mac, Windows and Linux binaries.

And these are only the possibilites offered by NME, which is basically a Haxe-based Flash API implementation.