SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.
Facebook Safety Check - Connect with friends and loved ones during a disaster
Website Informer - Website.informer: complete data lookup & free aggregated report on any domain including whois, visitors, IP & DNS details, competitors, owners, etc
Crisis Response on Facebook - Find more information about crises and crisis response tools
Site Rank Data - View historical rank information of websites via time series charts.
RscMe - Rescue & Emergency app for Apple Watch