SigNoz

SigNoz is an open-source, OpenTelemetry-native observability platform that provides unified support for logs, metrics and traces. It addresses the APM and instrumentation needs of modern microservices and distributed architectures while avoiding vendor lock-in. By leveraging ClickHouse as its underlying columnar database, SigNoz provides scalable, high-performance and cost-effective storage with fast querying, positioning it as a strong self-hosted alternative to platforms such as Datadog. It supports flexible querying through PromQL and ClickHouse SQL, along with alerting across multiple notification channels. In practice, we’ve seen SigNoz reduce infrastructure resource consumption and overall observability costs without compromising performance. While a managed cloud service is available, ready-to-use Docker images and Helm charts make it a practical choice for organizations that prefer to retain control over their data and infrastructure.