I've identified the key phrase as 'free for mac instal Zotero 6.0.27'. Based on the provided text, it seems that there is no direct download link available for Zotero 6.0.27 for macOS.

However, I can provide some alternatives:

1. Visit the official Zotero website (zotero.org) and check if they have a version compatible with your Mac's operating system.

2. Search for 'Zotero 6.0.27 for Mac' on reputable software download websites like FileHorse or Softonic.

3. If you're unable to find a direct download link, consider using the older version Zotero 5.0.76, which is available for Windows and macOS.

Please note that it's always recommended to download software from official sources or reputable websites to ensure safety and security.

Additionally, I'd like to mention that Endpoint Central is a separate software mentioned in the text, which appears to be a Windows Desktop Management Software. If you're interested in learning more about it, I can provide some information on its features and functionality.

Free for mac instal Zotero 6.0.27