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  Annotary 21 Jan 15

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  New Tab Plus 21 Jan 15

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  About:addons-memory for Firefox 25 Jan 15

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  LessChrome HD for Firefox 7 May 15

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  IE Tab for Firefox 1 Jan 15

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  LeechBlock 4 May 15

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  Cocoon for Firefox 3 May 15

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  HackBar 7 May 15