SigNoz is an open-source observability platform that provides a single tool for logs, metrics, and traces, aiming to be an alternative to commercial platforms like DataDog and NewRelic. It is built on OpenTelemetry and offers features like APM, distributed tracing, log management, and infrastructure monitoring. The platform has a free open-source version, as well as managed and enterprise options. SigNoz claims to offer predictable pricing and enterprise-ready features like SOC 2 Type II and HIPAA compliance.