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  Hola Unblocker for Firefox 1 Jan 15

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  Grammarly Lite for Firefox 22 Jan 15

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  FoxyProxy Basic 22 Jan 15

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  Omnibar 15 Apr 15

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  DuckDuckGo Plus for Firefox 21 Jan 15

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  Be Quiet 21 Jan 15

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  Active Whois Plugin for Firefox 7 Apr 16

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  HTTPS Everywhere for Firefox 11 May 16