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  Greasemonkey 1 Jan 15

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

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  DuckDuckGo Plus for Firefox 21 Jan 15

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  Click&Clean for Firefox 1 Jan 15

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  Enigmail 25 Jan 15

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  Lightbeam 1 Jan 15

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  FireSSH 21 Jan 15

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  FVD Speed Dial with Full Online Sync 21 Jan 15