From their site: "Photos have iPhoto. Music has iTunes. But when it comes to PDFs and other office documents, you're on your own. That is, until now. Now there is Yep and there's no looking back."
I tried Calibre but it didn't cut it and bogged down my system.
As about Zotero, I have mixed emotions as well - it's a nice feeder for Mendeley from firefox. Other than that, not too sure. Also, checkout Mendeley and this http://lifehacker.com/tag/document-management/
Hope that helps. Let us know what you learn :-)
http://www.debenu.com/benubird/overview.html http://www.mendeley.com/ http://sourceforge.net/projects/docfetcher/
Going to try them out starting with Benubird as it looks like it will address my needs the best. Will report back.
I have tons of ebooks, word docs, ppt, PDFs, etc. though, and manually organizing them would probably(definitely) take too much time.
How are you using Zotero?