ASDT comes with an SWFViewer that supports reload on build and additional logging defaults. The SWFViewer utilises the Eclipse SWT browser widget.

When you experience problems (white page) you might to find a  solution here.

For linux it is recommend to install the  XULRunner (don't forget to link your libflash*.so file into the xulrunners plugin directory).

Solution to blank SWF View on Mac OSX

1. Remove all old versions of XUL runner: delete the /Library/Frameworks/XUL.framework directory  (Reference)
2. Download the latest version of XULrunner from  Mozilla XULrunner releases and install it (open the DMG and run the installer PKG)
3. Add the Flash player plugin to the XUL runner plugin directory. To do this:
   1. Copy Flash Player.plugin and flashplayer.xpt from /Library/Internet Plug-Ins
   2. Paste them into /Library/Frameworks/XUL.framework/Versions/X.X.X/plugins where X.X.X is the current version number (e.g. 1.9.2)
4. Restart Eclipse if necessary. Try running one of your compiled SWFs within Eclipse. It should work now!