Observability / APM
SigNoz
SigNoz, Inc.
The flagship OpenTelemetry-native open-source "Datadog alternative" — logs, metrics and traces in one app on a ClickHouse backend.
- Category
- Observability / APM
- License
- Open core
- Deployment
- SaaS or self-hosted
- Cost
- Low
- Free tier
- Yes
- Self-host effort
- Moderate
- Maturity
- Rising
- Popularity
- ≈27k GitHub stars; leading OSS unified observability
The catch
Self-hosting at scale means you own ClickHouse ops, retention and upgrades; SSO/RBAC and some governance features are paywalled in Enterprise, so the community edition isn't enterprise-complete.
Monitors
ServersMetricsLogsTracesK8sCloud
Protocols
OTLP
Capabilities
AlertingDashboardsDistributed tracingAPI
Built for
SRE / DevOpsDevelopers
The honest take
The OSS “Datadog alternative” with the most mindshare — OpenTelemetry-native, all three signals in one app. Self-hosting it means becoming a part-time ClickHouse operator, which is the real cost behind “free.”