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  Facebook Messenger 26 Jan 15

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  HTTPS Everywhere for Firefox 11 May 16

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  ScrapBook for Firefox 11 Apr 15

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  Cliqz 20 Jan 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Roulette Lucky Number Generator 9 Jul 15

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  iMacros for Firefox 23 Jan 15

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  Cocoon for Firefox 3 May 15