What is the best crossplatform development tools for developing for OS X and Windows? I really like the idea of Project builder and Cocoa. But how do I move a Cocoa App to run on Windows? The only tool that I know of is RealBasic. It targets OS X, OS 9 and Windows. This is good, but Basic sucks ! I would like a good C, C++ and Pascal RAD tool. It seems like every thing is 2/3 of the solution. Borland Delphi/Kylix supports Linux and Windows, but not OS X. There are others, but they don't appear to be RAD tools. What I think Apple needs to do is to have a way of porting Project Builder and Objective C to Windows. Even if it was heavily thunked, thats OK. There appears to be no good tool to support OS X and Windows. Anyone have any pointers? Ideas? Agreement ?