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  Cocoon for Firefox 3 May 15

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  Web Developer for Firefox 1 Jan 15

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  WiseStamp Email Signatures 1 Jan 15

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  Active Whois Plugin for Firefox 7 Apr 16

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  AdF.ly Skipper 25 Jan 15

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  Adblock Plus for Mozilla Firefox 4 Mar 16

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  HTTP Header 16 Apr 15

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  AniWeather for Firefox 8 Feb 15