I came across gPapers this weekend, which is a relatively new application that bills itself as “iTunes for PDFs”. It looks pretty good, with lots of features.
![[gPapers]](http://gpapers.googlecode.com/svn/trunk/website/Screenshot-gPapers_reflect.png)
It uses pyGtk, so it’s another scripted app, no compilation needed. It has separate lists for authors, organization, etc. as iTunes does for artists and albums. It does a pretty good job of searching online databases, and reading PDF files.
Being a new app, and having a few unusual library dependencies, you probably won’t find it in your distribution’s repository. So if you want to give gPapers a shot, you’ll have to download and run it using the source.