Mendeley is a reference manager, academic collaboration network and crowdsourced database with a unique layer of social information research. Mendeley Desktop is available on Mac, Windows and Linux. Mendeley Web functions on all major browsers. Creating an account is free.
Manage references and files on your own computer using the desktop version, then share between computers using the web interface.
Both Mendeley Desktop and Mendeley Reference Manager are available for use on desktop computers. Desktop is older, though it has more options. Reference Manager is newer and is virtually identical to Mendeley on the web.
Install the Mendeley Web Importer -- Install the Web Importer into your favorite web browser to import references and documents from academic databases.
This allows you to save articles to your Mendeley Library as you browse the literature.