Zotero‘s target group is researchers and academics. But I use it for managing, organizing, and syncing my pdf reading material. So I can read my content on the

Zotero‘s target group is researchers and academics. But I use it for managing, organizing, and syncing my pdf reading material. So I can read my content on the iPad. Calibre can’t do that. I use Calibre to manage my Kindle content. And to manage my ebooks and pdf books. So there‘s some overlap. I don’t like the reader of Calibre, I prefer reading on my Kindle or in the iPad. Hence Zotero. But Zotero is way more than that. You can collect / reference / read and highlight research papers and publications. You can add content via browser plugin or via the DOI number of an article. Super smooth UX.