[Web4lib] Commercial or open source emergency notification software

[Tim Spindle]

Is anyone using, or has knowledge of, emergency notification software that
can send pre-recorded messages or text messages to mobile phones, pagers,
email accounts, or landline phones to notify interested parties of emergency
information (weather-related closings, local\national emergency, etc)?
We're looking for a solution to notify a lot of people with a minimal amount
of effort.  Any information is appreciated.

Tim Spindle