Best IT Alerting Software for Zulip

Grafana Labs provides an open and composable observability stack built around Grafana, the leading open source technology for dashboards and visualization. Recognized as a 2025 Gartner® Magic Quadrant™ Leader for Observability Platforms and positioned furthest to the right for Completeness of Vision, Grafana Labs supports over 25M users and 5,000+ customers—including Bloomberg, Citigroup, Dell Technologies, Salesforce, and TomTom. The LGTM Stack combines Grafana for visualization, Mimir for metrics, Loki for logs, and Tempo for traces. Grafana Cloud, the fully managed offering, accelerates time to value with turnkey solutions for Kubernetes monitoring, incident response, load testing, and more. It features Adaptive Metrics for cost-efficient data aggregation and native OpenTelemetry support. Built on open standards, Grafana empowers teams to visualize and correlate data from any source—without vendor lock-in—whether self-managed or in the cloud. Grafana Cloud scales with you, securely.

PagerDuty, Inc. (NYSE:PD) is a leader in digital operations management. In an always-on world, organizations of all sizes trust PagerDuty to help them deliver a perfect digital experience to their customers, every time. Teams use PagerDuty to identify issues and opportunities in real time and bring together the right people to fix problems faster and prevent them in the future. PagerDuty's ecosystem of over 350+ integrations, including Slack, Zoom, ServiceNow, AWS, Microsoft Teams, Salesforce, and more, enable teams to centralize their technology stack, get a holistic view of their operations, and optimize processes within their toolsets.

Nagios Core is the monitoring and alerting engine that serves as the primary application around which hundreds of Nagios projects are built. Nagios Core serves as the basic event scheduler, event processor, and alert manager for elements that are monitored. It features several APIs that are used to extend its capabilities to perform additional tasks, is implemented as a daemon written in C for performance reasons, & is designed to run natively on Linux/*nix systems. Alerts with escalation capabilities are delivered to IT staff via email and SMS to ensure fast detection of outages. Event handlers can automatically restart failed applications, servers, devices, and services when problems are found. Gain a centralized view of your entire IT operations and review detailed status information through the web interface.