Metric.live - Real-time and advanced periodic alerts for Google Analytics.
PagerDuty - Cloud based monitoring service
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
One Call Now - One Call Now's message notification delivers automated phone calls, SMS text messages and emails within moments to any group.
Keysmith - Create custom keyboard shortcuts for your Mac and the web
OpsGenie - Alerting and On-Call Management for Dev&Ops Teams