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  ScrapBook for Firefox 11 Apr 15

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  Grammarly Lite for Firefox 22 Jan 15

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  Highlighted Text To File 11 Apr 15

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  FoxFilter 4 May 15

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  MM3-ProxySwitch 17 Jun 17

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  Tab Mix Plus 23 Jan 15

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  Ghostery (for Firefox) 14 Feb 15

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  Hola Unblocker for Firefox 1 Jan 15