Apps like NT Sentinel

Here are some great alternatives to NT Sentinel by National Theatre IT :
Copernicus Sentinel
Copernicus Sentinel
★3.8
Titan HST
Titan HST
★4.2
Lompoc Police Department
Lompoc Police Department
★3.7
SIGNL4 – Mobile Alerting
SIGNL4 – Mobile Alerting
★4.3
Amazon Paging
Amazon Paging
★4.7
Alertable
Alertable
★4.0
Severe Weather Alerts
Severe Weather Alerts
★4.2
CrisisGo
CrisisGo
★3.4
WebEOC
WebEOC
★3.7
Alberta Emergency Alert
Alberta Emergency Alert
★4.3
NASA SAFE
NASA SAFE
★4.4
Smart911
Smart911
★4.6
Disaster Alert
Disaster Alert
★4.0
24/7 Software Communicator
24/7 Software Communicator
★3.7
Regroup AlertManager
Regroup AlertManager
★3.3
SafeSignal by AlertMedia
SafeSignal by AlertMedia
★4.0