Grafana OnCall / IRM — #2 Alternative to PagerDuty
Developer-friendly incident escalation chains, Slack/Teams workflows, and schedules
Routes Prometheus, Alertmanager, and webhook alerts through rotation calendars, phone/SMS/mobile push escalations, and automated incident war-room channels.
License: AGPL-3.0 · Pricing: Open Core · Compare all PagerDuty alternatives · Official Website