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  WebMail Ad Blocker for Firefox 15 Apr 15

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  BlogEverywhere Blogbar for FireFox 1.5+ 23 Sep 15

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  Grammarly Lite for Firefox 22 Jan 15

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  Adblock Plus for Mozilla Firefox 4 Mar 16

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  SimilarWeb for Firefox 23 Jan 15

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  Googlebar Lite 26 Jan 15

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  Fasterfox Lite 11 Apr 15

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  Annotary 21 Jan 15