Microsoft Photo Info Edit tool
I saw this tool and found it very useful for managing large photo collections. It helps if you already have things somewhat organized but this will allow you to edit all that information that is usually hard to get to. Below is a quick review I copied from gizmodo also.
Microsoft just released its Photo Info Tool that digital photogs will dig. Without messing with the actual photographic image, it lets you edit the metadata that accompanies each image without having to open Photoshop or any other image editor. You can access all of its functions right there in Windows Explorer with a quick right-click, and then you can change metadata such as copyright information, the title, keywords, the capture date and all other EXIF properties. You can edit a single image or lots of them at the same time. Plus you get a lot more information about each photo when you hover your cursor over it. It’s free.