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  DuckDuckGo Plus for Firefox 21 Jan 15

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  Coogle 14 Jul 15

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  Re-Pagination 15 Apr 15

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  ZenMate VPN for Firefox 15 Aug 18

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  Amazon Browser Bar for Firefox 5 May 15

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  JSView 6 May 15

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  Web Developer for Firefox 1 Jan 15

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  Rikaisama 23 Jan 15