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  Ghostery (for Firefox) 14 Feb 15

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  Enigmail 25 Jan 15

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  WebMail Ad Blocker for Firefox 15 Apr 15

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  Web Developer for Firefox 1 Jan 15

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  Firebug 1 Jan 15

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  Game-Station toolbar 13 Jul 15

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  IE Tab for Firefox 1 Jan 15

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  FireFTP 1 Jan 15