On the Mac, I fell in love with the 'Quicklook' feature which allowed you to anywhere, such as desktop or finder window (Explorer), just press the spacebar and you have a quick preview of the file's contents, play the song you just highlighted, read an entire PDF without opening it, and more. The first thing I found to help with this is a nice little program called QTTabBar which puts tabs in the explorer window, but also lets you 'quick look' the files that you are interested in viewing. It is rougher around the edges than Mac's quick look, but a suitable replacement.
Mac's Calendar program, I asked about that earlier here, but just settled on using Fluid from Mozilla to create a program file to load the Google Calendar (which ties to my Android). Load the program, and I am in. Very rudimentary, but so far pretty good.
Quicksilver - i have yet to find a suitable replacement. This program IMHO was killer! You set the hot key combo (I had CMD-Space for mine), and it would open up a window to let you start typing in the program name and it would let you launch it form there. YES - I know I can search in the Start Menu but, not really the same to me.
iPhoto - the best yet, hardly used (Maybe once) replacement I have found for that is Picasa. Not really a big fan of the program, but works for me for now.
It Just works! - That mentality that you come to rely on full time when you hook a printer, camera, thumb drive, or other hardware, you don't have to download the driver and install it. That probably has been the worst for me to adjust to, but really is no big deal.
Anyone else switch from MacOSX in the past back to Windows and run into a similar issue?








