Hey mosespatrader. OSX in general, is a great Java dev. environment. I did a project last year with JBuilder 7SE, and I was quite happy with the speed, and stability of OSX and JBuilder (which itself is a testimony to the stability of Java on OSX, as JBuilder is a java app). My project was about 90% platform independent, but I wanted to take advantage of Mac UIness when on OSX, and Win UIness on Win, Linux, etc. The tools are there, and Apple has proven itself committed to being a solid Java OS.