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  ScrapBook for Firefox 11 Apr 15

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  FoxyProxy 1 Jan 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Hola Unblocker for Firefox 1 Jan 15

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  Google Advanced Operations Toolbar 21 Sep 15

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  AdF.ly Skipper 25 Jan 15

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

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  Web Developer for Firefox 1 Jan 15