Zotero: Citation management tool: Zotero

• Zotero is a free-open source software tool managed by the Center for History and New Media at George Mason University.

• A citation and research tool that allows you to collect, organize, and cite sources from across the web.
• A free, open source research tool that can be downloaded as a stand stand-alone application and added to Chrome, Firefox, Safari, Internet Explorer as a web browser extension.
• Zotero can detect and add full-text articles in your library with a single click. 

What Zotero can do for you: 

• Collect, organize, and cite pdf’s, journal article, periodicals, images, audio, and videos. ​

• Allows you to add content with a single click with your browser extension.

• Extract reference information, such as author, title, publication, and year.

• Generate abstract reports.

• Take screenshots of websites.

• Export information as a formatted citation to word processing application in MSword, Google Docs, and Open Office.

• Keep your information up to date by syncing your desktop application with your web account.

Data Collection

When accessing the site Zotero will collect:

• IP address
• Type of browser
• Zotero collects the library data you provide if you choose to synchronize your library with the Zotero servers.

Uses

• Zotero will use the data collected to improve their services. ​​​

• Zotero does not sell the data collected to third parties 

Source: https://www.zotero.org/support/terms/privacy