For Mac OSX: Stop any application from appearing in the dock! Many applications where you would want this functionality already allow you to do this in their preferences, but sometimes, there are applications that don’t offer the “hide icon” feature. In my case, I have an Apple USB 56k Modem hooked up to my Mac, and using a program called “Call Wall”, all phone calls that come in are displayed as Growl notifications. I love it, but could do without the application taking up Dock space. I fired up Dock Dodger, dragged in Call Wall, and now I’m all set. Call Wall now runs, but without any dock icon.