Alternative ways for developing for Android

I am an Android developer. I know of a few cross-plat开发者_StackOverflow中文版form development tools such as

• Rhomobile
• Anscamobile's Corona SDK
• Phonegap
• Titanium Appcelerator
• Google App Inventor.

If you know any tools apart from the ones I have listed please reply. Thanks in advance.

Of course there is Monodroid...

Sencha Touch

• Air for Android
• Monodroid
• Android scripting http://google-opensource.blogspot.com/2009/06/introducing-android-scripting.html

App Inventor is fun. This is what I have

Definitely try out Crank StoryBoard! it's got a complete GUI, it's really easy to use and very intuitive. If your looking to try things out, at least get an eval copy at http://www.cranksoftware.com/