ViGlance changes the Windows Taskbar to look like the Windows 7 ‘superbar’. It groups things together into nice little icons: all the Firefox things in one icon, all the Windows Live Messenger things in another. Clicking or mousing over an icon yields a smallish popup that shows what’s inside the icon – for me, mousing over the Firefox logo gives me ‘Downloads’ and ‘Gmail’. You can then click on any of the listed items to switch it to your active window. Screenshots:
ViGlance can be downloaded here. Windows only.
NOTE: The version shown in this post is not the most recent version. The most recent version includes thumbnails of windows upon mouseover, as far as I can tell from their website.