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  Ghostery (for Firefox) 14 Feb 15

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  IE Tab for Firefox 1 Jan 15

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  HTTP Header 16 Apr 15

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  WiseStamp Email Signatures 1 Jan 15

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  BlogEverywhere Blogbar for FireFox 1.5+ 23 Sep 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Awesome Screenshot for Firefox 11 Apr 15

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  Ecosia 31 Dec 14