PagerDuty - Cloud based monitoring service
MultiBel - MultiBel is an emergency notification system. MultiBel alerts through the emergency app, telephone, email, SMS and pagers. MultiBel can be connected to hardware (e.g. fire alarms & emergency buttons) or software (HRM system, planning systems).
One Call Now - One Call Now's message notification delivers automated phone calls, SMS text messages and emails within moments to any group.
east-tec Eraser - Protect your sensitive data and privacy, and securely erase all evidence of your Internet and PC...
OpsGenie - Alerting and On-Call Management for Dev&Ops Teams
VictorOps - We make on-call suck less & help teams to solve problems faster.