Zotero For Mac Newest Version
Choose Zotero Standalone if: • You prefer Safari or Chrome to Firefox • You prefer to run Zotero in its own window instead of in the browser Zotero Standalone (unlike Zotero for Firefox) runs as a separate program instead of part of your web browser. It works with Firefox, Chrome and Safari. And install Zotero Standalone just as you would any other program. 
Zotero is also available for Macs as a stand-alone (client) version, with a browser extension available for Safari if you do not have Firefox installed. Free mac media player. To download the Mac client, scroll to the bottom of the Zotero download page and choose the Mac option under the 'Client' heading. Whether you're searching for a preprint on arXiv.org, a journal article from JSTOR, a news story from the New York Times, or a book from your university library catalog, Zotero has you covered. Zotero is a powerful tool for managing any research project. It has many professional features (there are more than 7,000 CSL-based style templates to ensure you get the citation format you need), but the core of the program is simple enough for anyone to use.
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You will also need to install the to allow your browser to save items to your Zotero library. You can install both Zotero Standalone and Zotero for Firefox and use both on the same computer.