Zotero is a reference management tool that is free to download and use. It is easy to use and perfect if you are writing a short paper.
Zotero collects, manages and cites sources in a similar way as EndNote and RefWorks. It works with Windows, Mac or Linux systems.
You can download Zotero from www.zotero.org.
Register a user account in order to sync and share your Zotero-library