Zandy is an Android application for working with a Zotero library on your Android device (for now, it needs to be running Android 2.2 or later). The goal is to do everything that Zotero itself can do, but for now we’re settling for viewing, modifying, adding references, viewing and modifying notes, and viewing attachments.
Zotero Bookmarklet is a bookmark you add to your browser to save the page you are reading to your Zotero library. The process for installing and using the Zotero bookmarklet varies depending on the browser you are using.
Scanner For Zotero brings Zotero's magic wand tool out into the physical world. Scan the ISBN barcode on any book, and Scanner For Zotero will fetch that item's bibliographic information from the web and allow you to add it to your Zotero library.
NOTE: These apps may be free, or you may have to purchase them.