PagerDuty - Cloud based monitoring service
OpsGenie - Alerting and On-Call Management for Dev&Ops Teams
Squadcast - Automate incident response, reduce downtime and enhance your tech teams’ delivery with a unified platform.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
PagerTree - On-Call. Simplified. PagerTree empowers teams to share oncall responsibility and respond faster when incidents occur.
Cabot - Self-hosted, easily-deployable monitoring and alerts service - like a lightweight PagerDuty