I use about 2 dozen applications on a daily basis that aid in everything from domain purchasing to web design, but these are 4 I couldn’t live without regardless of what I was doing.

By itself, TaskSwitchXP is a replacement for the Alt+Tab task switcher built into Windows XP (I refuse to Vista, so this one is for XP folks only). If you have a Logitech G5 /G7 – or any other mouse with programmable buttons – you can assign the thumb button to Alt+Tab and any time you press it, this task switcher will pop up, using the scroll wheel to cycle through your applications. Release the thumb button to select that app. This makes switching your applications amazingly fast. There’s an even better application called TopDesk, but I chose to give up awesomeness for speed. It’s basically Expose` for Windows.
Vista Users: You can get this effect for free

Another OS X `esque app I couldn’t live without is RKLauncher. It hides the windows taskbar (optional) and gives you an application launcher that stays out of the way but gives you a much more refined way to access your applications . The real benifit to me other than it looks cool is that it gives me more screen real estate. There are other docks (ObjectDock, RocketDock) but RKLauncher is the simplest and has the fastest response when you start to get several dozen icons going. My personal favorite is ObjectDock because it has so many options and features, but it can get too slow. Again, I prefer speed over wow. My only beef with RKLauncher is that it fails to hide the windows taskbar all the time on my machine. I don’t care though because I keep my taskbar on the left side on auto-hide so I can hit the Windows key and bring up my start menu.

The most useful feature of GreenShot is that when you hit the PrtScn key on your keyboard it gives you cross hairs you use to outline a region of your screen you want a screenshot of. You can set it to save it to a folder somewhere or put it on your clipboard. There are other options as well as a built-in image editor as well, but I don’t use them. In this industry there’s always a need to show someone something on your screen and this little tool helps a lot. (It’s also free and open source)

This is the newest addition to my desktop apps and I don’t know how I lived without it. Snackr is a desktop RSS Reader built with Adobe AIR. It sits on any side of any monitor (native support for multiple monitors) and scrolls through entires from your RSS feeds. You can easily hide it or let it sit on top of open windows. It’s so badass I no longer use Google Reader which until yesterday was my absolute favorite RSS Reader of all. I still add my favorite feeds to both so I can get my fix when I’m on the road. Snackr is a perfect example of Desktop 2.0 and a beacon of excellent widget design.
Sounds like someone is having Mac withdrawals. Greenshot = command + shift + 4 on a Mac.
I can’t live without Better File Rename. There is a Mac version, too.
Hey Greg, Great entry, I am downloading GreenShot, looks pretty useful, and as for the MAC icon dock, I use Object Desktop, it’s such a nifty little gadget. Just stopping by, Talk to you later, -Ryan
@Sergio
I’ll admit I envy OS X.
@ladyborg
I haven’t used Better File Renamer, but I absolutely love File Renamer Ultra 2000. It’s not developed or even supported anymore (I don’t think), but it’s awesome nonetheless.
@Ryan
I’m a big fan of ObjectDock as well, but even with 4 cores it seems to slow down my PC. That might have been a combination of ObjectDock and TopDesk though, as I haven’t tried it out since then.
Hey; great recommendations – thanks. I’m going to try RKLauncher and maybe Snackr. One tool I CANNOT live without is Pixie, the little mouse-color picker: http://www.nattyware.com/pixie.html
I dont own a mac yet. But I do hope to get one this chrismtas.
I noticed you’ve mentioned linux a few times, and think if you like RkLauncher you’ll enjoy Gnome Do – comes with a skin called “Docky” I recommend you check it out!
@Sergio
I’ll admit I envy OS X.
@ladyborg
I haven’t used Better File Renamer, but I absolutely love File Renamer Ultra 2000. It’s not developed or even supported anymore (I don’t think), but it’s awesome nonetheless.
@Ryan
I’m a big fan of ObjectDock as well, but even with 4 cores it seems to slow down my PC. That might have been a combination of ObjectDock and TopDesk though, as I haven’t tried it out since then.