Zotero is a free citation manager that helps you collect, organize, and cite journal articles and other information sources. You need Windows, Mac, or Linux to install Zotero, and you need to use Firefox or Chrome to save citation information from online journal articles and website.
Zotero is available at https://zotero.org
ZoteroBib is an online tool that helps you create bibliographies quickly right in a web browser. No installation or account is required.
ZoteroBib is available at https://zbib.org