Windows only: Free Explorer add-on QTAddressBar clones the functionality of Vista's new address bar in Windows XP. For folks unfamiliar with the new Vista address bar, it provides a clickable breadcrumb trail of every folder leading to your current location. Clicking one of your folders will take you directly to it, and clicking the down arrow provides a drop-down for moving to any folder within that one. Brought to you by the same folks who made previously mentioned QTTabBar, this freeware Explorer add-on looks like another nice stopgap between Vista and XP. While you're at it, check out more ways you can power up Windows Explorer with free add-ons.