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  Media Hint 11 Apr 18

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Firebug 1 Jan 15

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  About:addons-memory for Firefox 25 Jan 15

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  Active Whois Plugin for Firefox 7 Apr 16

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  Fasterfox Lite 11 Apr 15

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  Awesome Screenshot for Firefox 11 Apr 15

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  Zotero 26 Jan 15