Infra & metrics
Netdata
Netdata Inc.
Zero-config, per-second, auto-discovering real-time monitoring with thousands of metrics out of the box — best for "what is this box doing right now."
- Category
- Infra & metrics
- License
- Open core
- Deployment
- SaaS or self-hosted
- Cost
- Low
- Free tier
- Yes
- Self-host effort
- Turnkey
- Maturity
- Established
- Popularity
- ≈79k GitHub stars
The catch
Built for high-resolution real-time troubleshooting, not long retention or fleet-wide querying; the agent is heavy (200-500MB RAM), and the genuinely useful multi-node/alerting bits push you to the Cloud SaaS.
Monitors
MetricsServersK8sCloud
Capabilities
AlertingDashboardsAnomaly detectionAutodiscovery
Built for
HomelabSRE / DevOpsSMB
The honest take
Install it and you instantly see everything, per second, no config — genuinely magic for “why is this server sad right now.” Less the tool for “what happened last Tuesday across 200 hosts.”