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  ERail Plugin for Firefox 27 Sep 15

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  FireBug 17 Feb 15

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  British English Dictionary 3 Jun 15

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  SQLite Manager for Firefox 27 Sep 15

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  Yahoo! Mail Notifier for Firefox 27 Sep 15

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  iMacros for Firefox 27 Sep 15

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  FoxLingo Translator for Firefox 20 Feb 15

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  Selenium IDE 14 Apr 15