There are thousands of Firefox add-ons. Did we test them all? Nope! But, these 12 are the ones you need to make the most of your Web browsing.
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Xmarks allows you to synchronize your bookmarks with any other Xmarks-equipped browser. It stores copies of your browser bookmarks online so you can access them from any Internet-connected computer with a Web browser, whether Xmarks is installed or not. Xmarks also adds extra information about Web sites to search results pages.