SciPlore is an interesting tool that I just started playing with.
“Are you using mind mapping tools such as MindManager, FreeMind or XMind? And reference management tools such as JabRef, Endnote, or Zotero? And do you sometimes even create bookmark in PDFs? Then you should have a look at SciPlore MindMapping.”
My need for PDF management tools is really pretty specific and infrequent. What about you academic folks? Is this something you could use?