OBS! On Mavericks you might get an error message "This application is damaged and can't be opened. You should move it to the Trash." - The file is actually not damaged, it is just a bad error message. There is a settings in the "Gatekeeper" that you need to change to be able to download software from other places than the App-store. How to solve: http://answers.uchicago.edu/page.php?id=25481