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  ZenMate VPN for Firefox 15 Aug 18

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  WebMail Ad Blocker for Firefox 15 Apr 15

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  Click&Clean for Firefox 1 Jan 15

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  Default FullZoom Level for Firefox 11 Apr 15

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  Mozilla Archive Format 22 Jan 15

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  FireShot for Firefox: Capture + Annotate Webpage Screenshots 26 Jan 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  About:addons-memory for Firefox 25 Jan 15