A utility (primarily) for those with multiple monitors.
I got it to stretch my bottom bar across into the other screen, and it also has a feature to fix
alt-tab so it only shows/includes the current desktop. Also of interest is putting a proper screensaver on alternate monitors.
It has a huge array of features. Of note is a configuration backup/restore feature, so I don't have to make any notes on it.
I'm using the for-pay standard version, and can't review the without-cost version. So while I can say I highly recommend this, I don't think it's really valuable to recommend something with a price tag.