I just discovered Yep, which bills itself as “iTunes for PDFs”. And I’m hooked. Like most of us, as the PDF format has continued to get more widespread acceptance, I have been accumulating more and more PDF documents on my mac. They’re scattered all over my system, in my mail attachments, in various folders, and I often have a bunch sitting on my desktop at any given time. And far too many of those pesky PDFs that came from some link I clicked on somewhere come across with meaningless filenames.

With Yep, I’ll no longer waste much time searching for that particular PDF I need, or wondering what that cryptically-named PDF on my desktop is. Yep does just what it claims to, it provides a friendly interface to all of your PDF documents, with expandable thumbnail views and every possible bit of info and meta-data you could want about them. The Yep interface is simple but powerful, with features like tagging and searching across all of your PDFs.

Yep doesn’t copy or move your PDFs like some other similar products, but rather builds a smart interface on top of Spotlight’s searching capability. (One potential downside, if Spotlight can’t find a PDF on your system because you’ve restricted what Spotlight indexes, Yep won’t see it either).

The real power and convenience of Yep comes from its tagging features. It automatically tags all of your PDFs with the folder name they live in, but it also allows for adding more tags to improve your PDF organization. If you like organizing things by tags and the simplicity of tag clouds, and have been wishing for better system for your PDFs, you should definitely give Yep a try.