I looked at the forums and the web but could not find a good solution. I have also read this thread http://forums.macrumors.com/showthread.php?t=1398495&highlight=pdf+annotations+manager but it did not have any recommendations for my particular problem. For some weeks now I have been using 'preview' to make papers that I read. For references I have been using Mendeley but Mendely nor preview lets you organize your annotations so I end up searching all the documents all over again if I need to find a reference. After a long search and several read threads I found Papers2 . Its pretty basic but it at least lets me search and manage annotations. Before I import my whole library into it I was wondering if you know any similar applications that can use bibtex syncing with the Mendely library and also lets me find my annotations.