We have not tested these apps yet, but these look like useful discussions of what's available.

The instructions usually go like this:

1. Bookmark this page.
2. Edit the bookmark you just created
3. Change the title to something appropriate such as "Save to Zotero"
4. Copy the code in the textbox below and paste it as the URL for the bookmark.  The linked webpage will give you html code to paste into bookmark.

You may have to add your Zotero password to your Settings.