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  Session Manager 1 Jan 15

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  Telify 27 Jan 15

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  Adblock Plus for Mozilla Firefox 4 Mar 16

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  Highlighted Text To File 11 Apr 15

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  Cliqz 20 Jan 15

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  CoolPreviews for Firefox 11 Apr 15

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  Wappalyzer 15 Apr 15

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  HTML Validator (based on CSE HTML Validator) 21 Sep 15