Mendeley

Mendeley is a desktop & web-based citation tool, but more than that, it is a community of researchers. You can search through the millions of papers it contains from other Mendeley users, share your references and papers with collaborators, join public discussion groups, and discover other researchers in your field.

Cite as you write:
Generate citations and bibliographies in a whole range of journal styles with just a few clicks. For your convenience, we’ve made sure Mendeley’s Citation Plugin is fully compatible with Word (including Word for Mac) and LibreOffice. It also support BibTeX export for use with LaTeX.

Annotate as you read:
Easily add your thoughts on documents in your own library, even from mobile devices. For ease of collaboration, you can also share documents with groups of colleagues and annotate them together.

Organize your content:
Import papers and other documents from your desktop, your existing libraries or websites with ease. Mendeley automatically captures information like authors, title and publisher, which makes organization and browsing easy.

Official Website: https://www.mendeley.com