OpenMetadata

OpenMetadata is an open-source metadata platform built on a unified, schema-first metadata model with open APIs. It combines data discovery, column-level lineage, profiling, data quality tests, and collaboration features in one deployment.

A broad connector library ingests metadata from databases, warehouses, pipelines, dashboards, and messaging systems. Quality tests and incident management are native to the platform rather than a separate tool, and versioned entities track how metadata changes over time.

OpenMetadata suits teams wanting catalog, lineage, and quality in a single open-source system. It is self-hostable with a managed offering from Collate, and is most directly compared with DataHub.