Zotero continues to be the best reference manager around — #FOSS, made by scholars for scholars. Upcoming features (now available for beta testing) include automatic relinking of #mendeley citations, much faster #googledocs integration, and support for #latex math in notes
If you don't use a reference manager yet (or if you're using a for-profit one like Mendeley or EndNote) you can always give #Zotero a whirl: it's free and doesn't lock you in: https://zotero.org



