I recently tried Readcube, which is a PDF reader and organizer. I did so because Nature has been using it built into their site, and I like how it displaying PDFs. The article data downloads seamlessly for most papers, and interface is quite beautiful:
The really cool feature is that Readcube automatically downloads the references and the supporting information documents and can display them at a click of a button. More importantly, it displays the references in the sidebar. It makes an excellent reading experience!
The final interesting feature is that Readcube offers recommendations based on your library. From my quick scan, the recommendations seem pretty good.
Other than that, Readcube is quite feature poor. It doesn’t have a way to insert citations into a Word document, like Papers and Mendeley does, although you can export to Endnote. I don’t see a way to read in full screen nor does it let you view two pages simultaneously, like Papers does.
The screenshot above is from Papers fullscreen view, which is how I really like to read PDFs.
But Readcube is still in beta, and they’re starting from a really nice starting point. I’m not ready to give up on Papers for reading (and I’ve been using Mendeley for Word citations, because it has really nice collaborative features). But I might try Readcube some more, mainly because of the awesome ability to see all the references and the paper simultaneously. I really wish I could mash Papers, Mendeley, and Readcube all together into one feature-rich program…