OS X has its dock, Windows Vista has an enhanced start menu, and Windows XP has, well, a bunch of menus to click through to launch programs. But thanks to independent developers, there are a ton of great program launchers out there that make it easy to bring an OS X-style dock to Windows, or keyboard program launchers to pretty much any operating system.

Over the years we've tried out a ton of program launchers, but we're not sure we've settled on a favorite. The sidebar launchers for Vista and Yahoo! Widget Engine are kind of nice. RocketDock is amazing if you have a handful or applications you use all the time. And keyboard launcher Launchy is all kinds of awesome, if you can remember the name of the program your looking for.

But we haven't yet found one launcher to rule them all. So we turn to you, our loyal Download Squad readers. What's your favorite application launcher, and why? Oh yeah, and don't forget to let us know what operating systems it works with. While Launchy and RocketDock are both Windows-only, we don't want to leave out applications like Google Desktop that are cross-platform.