What are other hassle-free, native, cross-platform programming language+tools+environment (IDE, libs, etc.) besides Lazarus (Free Pascal)?

There are many native, cross platform environments out there that are not hassle free; they mostly need to be built from source and even if you manage to build them on Windows, it's absolutely a miracle, not a well established clear not need to bang your head against cygwin, MinGW, MSYS, gcc and my God bash!

Some examples come to mind (I've tried & tested a bit) like:

• LambdaNative which could be built for all major desktop & mobile platforms, based on Gambit Scheme; but again building for Windows.


• Go with Qt


• C++ with Qt (You do not call C++ hassle-free, right?)


• Adobe AIR (Security)


• REBOL (Is it still alive?)


• Python & Qt (Licensing & security & bindings the last time I've tried it were really old)


• wx[X] not really feels native - most likely I was doing something wrong.

I would very much like to hear about real world experience - or pain! The main problem here is building for Windows; besides things like Python+Qt are not really native (One could reverse engineer it in a casual manner).