Early warning sound mirrors
Photographs of accoustic early warning sound mirrors on the British coast
http://www.ajg41.clara.co.uk/mirrors/

Natural Disaster Early Warning Network
Disaster early warnings network system for hazards alerts of tornadoes, lightning storms, floods, tsunamis, earthquakes, and terrorist disasters.
http://www.disasterwarning.com/

Vision Fire & Security
Xtralis Pty Ltd is a global leader in very early warning smoke detection systems, sophisticated video-based security solutions and voice alarm systems.
http://www.vision-fs.com/

Icam Ltd.
Integrated smoke and gas detection systems, laser smoke alarms, FireTracer, GasTracer, and early warning systems.
http://www.icam.ltd.uk/

Quakefinder
Satellites and ground systems incorporate magnetometers to detect electromagnetic signals associated with earthquakes. These early warning systems can be used for earthquake forecasting and earthquake preparedness.
http://www.quakefinder.com/

Roselieb, Frank
Frank Roselieb - Crisis management, crisis communications, issues management, risk management, disaster management, business continuity management
http://www.roselieb.com/

Warning Systems (UK) Limited
Warning Systems UK Ltd - The UK Market leader in Public Safety
http://www.warningsystemsgb.co.uk

Alert Systems
Flood Warning Homepage, with information on technologies, organizations, and vendors
http://www.alertsystems.org/

SmartSignal Corporation
Equipment conditioning monitoring (eCM) software provides early warning of impending faults with equipment and systems.
http://www.smartsignal.com

Central Communications and Electronics
Provider for two-way radio, satellite communications, early warning systems, fire communications, voice-logging, wireless networking, video systems, interoperability and public safety accessories. Located in east Tennessee.
http://www.mssenger.com/