- https://earthquake.usgs.gov/earthquakes/map/ (USGS, by default, the above map will show M2.5 earthquakes that occurred in the past 1 day.)
- https://earthquaketrack.com/p/united-states/delaware/recent (Earthquake Track, this map shows recent earthquakes M1.5 or greater.)
- http://ds.iris.edu/seismon/? (IRIS Seismic Monitor)
- http://seismo.berkeley.edu/seismo.real.time.map.html (Berkeley Seismology Lab)