GeoHazards International
Live Seismograms from the Internet
USGS National Earthquake Information Center
US National Seismic Network
EQE International (Engineering information)
Public Seismic Network (San Fransisco area)
Southern California Earthquake Center
Albuquerque Seismology Lab
University of Memphis - Center for Earthquake Research and Information
Univ. of Michigan, "MichSeis"