I put together a few things in Haxe several years ago. It is nice to be able to use the same core language with JavaScript, ActionScript, direct to Flash, NekoVM, or C++ source. I see there's an even better selection of targets now.

At the time, there were separate libraries for each target some of which had overlapping things I felt could be combined into a more standard library. Is there more common ground and less target-specific stuff these days?