Valgrind is still working on getting OS X 10.8 support working. Each platform will have strengths and weaknesses. For example, the upcoming stuff in XCode whic

Valgrind is still working on getting OS X 10.8 support working. Each platform will have strengths and weaknesses. For example, the upcoming stuff in XCode which will let you see power usage have no parallel in Linux. If your stuff is portable to Mac and Linux, you get to use both Valgrind and XCode to improve your code.