Zotero has announced its Zotero Everywhere initiative.
Here's an excerpt from the announcement:
We're delighted to announce Zotero Everywhere, a major new initiative generously funded by the Andrew W. Mellon Foundation. Zotero Everywhere is aimed at dramatically increasing the accessibility of Zotero to the widest possible range of users today and in the future. Zotero Everywhere will have two main components: a standalone desktop version of Zotero with full integration into a variety of web browsers and a radically expanded application programming interface (API) to provide web and mobile access to Zotero libraries. . . .
Today we are announcing support for Google Chrome, Apple Safari, and Microsoft Internet Explorer, which account for 98% of the web's usage share. Plugins for these browsers will soon allow users to add anything they find on the web to their Zotero libraries with a single click, regardless of the their browser preferences. Rather than use the Zotero pane in Firefox, users will have the new option of accessing their libraries via a standalone desktop version of Zotero, available for Mac, Windows, and Linux.
Zotero's web API offers any application developer the ability to access individual and group libraries via a simple, human-readable programming interface. Until now, this API has been “read-only”—users could view their libraries but they could not change them via the web or via the API. Today we're announcing the opening of Zotero's write API to the public over the coming months.