Earthquake Maps by Earthquick - Interesting earthquake web map.
Guardian Circle - Global, decentralized 9-1-1 emergency response
Crisis Response on Facebook - Find more information about crises and crisis response tools
Facebook Safety Check - Connect with friends and loved ones during a disaster
Harmany - Find or offer shelter during emergencies and evacuations 🏠🌀🔥
SOSmart - Automatic car crash detection app, using your phone's data