This is great news! I just bought an iPad yesterday, and I would like to do some development for it. Since I stopped paying attention to them when Apple added

This is great news! I just bought an iPad yesterday, and I would like to do some development for it. Since I stopped paying attention to them when Apple added the restrictions, what are all of the tools which are now usable that were in a grey zone before? The Adobe one is the only one I remember.