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

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  Zotero 26 Jan 15

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  FEBE 16 Apr 15

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  TabTab 10 Jul 15

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  MM3-ProxySwitch 17 Jun 17

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  GetVideo 21 Sep 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Fast Dial 1 Jan 15