I've heard anecdotal reports from a few developers that OS X's IOKit driver framework, and its limited subset of C++, works very well. It's very limited in term

I've heard anecdotal reports from a few developers that OS X's IOKit driver framework, and its limited subset of C++, works very well. It's very limited in terms of the language features available, and sounds like it strikes a good balance. Of course, this is all anecdotal. YMMV.