After reading this post, I decided to write this one just to remember that I have to put my bibliography into bibtex format 😀
So, you want to organize articles, books or papers? I remember at least two apps for Linux:
Jabref (which I think it can be used in windows too)
Referencer seems pretty close to Yep, but I need to check it.
If you are just looking for an app to organize your books, cd’s or dvd’s (or…) you can give a try on Tellico . If you go to the site, you have other alternatives on your left side 🙂
Recently, I found Aigaion (online organizer), but I need to check it better.