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  Google Advanced Operations Toolbar 21 Sep 15

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  Active Whois Plugin for Firefox 7 Apr 16

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  NetVideoHunter 27 Apr 18

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  MM3-ProxySwitch 17 Jun 17

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  YouTube Control Center 30 Dec 14

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  Mozilla Archive Format 22 Jan 15

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  Omnibar 15 Apr 15

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  Greasemonkey 1 Jan 15