Zotero Connector and Safari 13
The Zotero Connector for Safari is currently unavailable for download. Existing installations of the Zotero Connector for Safari will continue to work in Safari 12.
If you don't already have the Zotero Connector for Safari installed, you can use either the Zotero Connector for Firefox or Chrome or the Zotero Bookmarklet.
We're currently evaluating our options for best supporting Safari users going forward. Follow @zotero on Twitter for updates.
In Safari 13, Apple is discontinuing support for the original type of Safari extension, which affects the Zotero Connector and many other extensions.
These Safari extensions, which work similarly to extensions for Chrome and Firefox, are being phased out in favor of Safari App Extensions, a much more limited type of extension that must be distributed as part of a Mac app. Legacy Safari extensions will no longer work in Safari 13, which will be released in September 2019.
Update, September 3, 2019: Even though Safari 13 won't be released until later this month, Apple took down the Safari Extensions Gallery ahead of schedule, making new installations of the Zotero Connector for Safari impossible.
For the best Zotero experience, you may wish to use the Zotero Connector for Chrome or Firefox instead. Firefox and Chrome provide powerful extension frameworks that allow us to offer advanced functionality such as automatic proxy detection and automatic RIS/BibTeX import, features that weren't possible in Safari even before Apple further restricted what Safari extensions can do. We're also able to release updates to the Chrome and Firefox extensions immediately, rather than waiting for updates to be approved by Apple.
Regardless of future Safari extension support, you'll still have the option of saving to your Zotero library using the Zotero Bookmarklet in Safari.
See this forum thread for further discussion of this issue.