I ran across this application a few weeks ago and have been using it since. It's a pretty slick replacement for the old Windows ALT/TAB application switcher. It has a lot more features and includes thumbnail previews of your windows. This works a lot better than the Windows XP Power Toy. Plus, you can configured it to minimize applications to the systray instead of the taskbar—which is useful for applications like Thunderbird which don't do that natively (although I use an application called ThunderTray for doing that w/Thunderbird.)
Oh yeah, it's totally free! For more information, click the link below:
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