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  Web Developer for Firefox 1 Jan 15

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

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  Click&Clean for Firefox 1 Jan 15

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  Googlebar Lite 26 Jan 15

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  HTTPS Everywhere for Firefox 11 May 16

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Hola Unblocker for Firefox 1 Jan 15

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  Session Manager 1 Jan 15