Furthermore I think http://www.docear.org/ deserves to be mentioned as another free open-source solution with some interesting mind-mapping functionality: http://www.docear.org/software/screenshots/
Furthermore I think http://www.docear.org/ deserves to be mentioned as another free open-source solution with some interesting mind-mapping functionality: http://www.docear.org/software/screenshots/
Recently they even added a new dark pattern so that when you click the "download PDF" button on their articles it opens up a web app reader loaded with tracking instead of just giving you a PDF. You then have to spend time and click through about three menus to really download the PDF.
It's to the point that I avoid articles published by Elsevier if possible. Easier in my field than others I'm sure.
Too bad they sold out to the dark side. After they were acquired, I switched to Zotero, but I wasn't doing active research anymore by then, so I don't have as much experience of using Zotero. On the surface it looks pretty good though.
At first I preferred the way that Mendeley did this with its built in pdf reader, but now I'm happy Zotero delegates to the pdf software of your choice.
lastly -- how good is their mobile app?
(Disclosure: Zotero developer)