How do current tools for multi-platform development compare?
Which tools are available and where's the biggest community?<p>I'm interested in building a relatively simple app that should run on as many devices as possible. The app shouldn't rely on any of the phone's sensors.
I'm especially interested in creating a good User Experience but since iOS, Android and all the other platforms behave quite differently I feel like this can be a deal breaker.<p>Please share your insights, experience, links and knowledge about developing one app for multiple mobile devices!
Adobe AIR works great, has support for some phone features build in, all others can be added using native extensions.<p>Skinning can be done very well, and the app could also run in the browser via flash.<p>The bad part is, AIR is relativly slow on older mobile devices.