TaggedFrog is an iTunes-styled tagged for your files.
TaggedFrog tags your files, but keeps the tags to itself--there's little cross-over with Windows Explorer. You can drag-and-drop from Explorer, though, and that makes adding tags significantly easier. It does nothing automatically, which means there's little chance of a file getting mis-tagged and lost in the tag cloud. You can batch tag files from the Scan and Tag option under File, and batch edit tags after your initial tagging process. TaggedFrog can be accessed and tags initiated from the System Tray.
TaggedFrog's biggest drawback is the utter disconnectedness of the program from Windows Explorer--there's no way to tag files from Explorer without mouse labor. The iTunes-based interface belies the unnecessarily complicated workflow, another drawback. Where tagging and managing should be one-step motions, it can take three or even four to complete basic tasks.
The Filter box is especially hard to get used to, with both drop-down options and the ability to accept user-entered parameters. When entering your own search, you must hit Enter to initiate the filter. It also needs about 45 MB of RAM to run, which isn't outrageously large but seems like a bit much for a program with so few visible hooks into other system processes.
