C# and .NET for Android and iPhone development
As the project mono progresses we have two products being rolled out commercially viz Mono Droid and Mono Touch . The android version is still beta and can be downloaded for free, they integrate with VS 2010 only. I couldn't find an open source mono version for both the development stacks, but there is a possibility that they exist. Will find out tonight. Θ Ω Sushant ♂