These are my Current 4 Favorite Mac Apps and One that I don't ever want to go without again. Post your best four. 1. Quicksilver - I can't use my Mac without this Application anymore http://www.blacktree.com/ 2. Teleport - This application allows me to control both my Macs from one keyboard. http://abyssoft.com/software/teleport/ 3. Rapidostart This Application gives me access to an onscreen dock and when you use a two button mouse you can use one of the buttons to control it. I actually use the Logitech four button trackball it is awesome http://www.app4mac.com/action_freewares.lasso?-session=WEBS:4750023E076642A7C4JjO2D74FA0 4. Candybar This is a great application for customizing your dock and icons on your computer http://www.panic.com/candybar/ Now of course I have many more Applications that I use and like but these are some of the top ones, post your top four applications.