I made good experiences with Zotero. Works well with LaTeX, a browser-plugin allows to add papers directly and you can annotate downloaded PDFs. Only problem I had were the paper-metadata, which often needed some fixing. Also that you cannot host your own server is a slight disadvantage.

This is for memes about science, not political agendas. Spread your anger elsewhere, or better, keep it for yourself.

Actually, they reference him.