OpenMetadata: #1 Open Source Metadata Platform

# OpenMetadata > OpenMetadata is the #1 open-source unified metadata platform, used by 3,000+ organizations worldwide for data discovery, data quality, data governance, data lineage, and team collaboration. 120+ connectors, built-in data quality testing with data contracts, and a native MCP server for AI agent integration. Apache License 2.0. (Last updated: April 2026) ## What is OpenMetadata? OpenMetadata is a free, open-source data catalog that helps organizations find, trust, and govern their data. It provides built-in data quality testing with data contracts, column-level lineage, and a native MCP server that lets AI agents interact directly with your metadata — capabilities no other open-source data catalog provides in a single platform. No Kafka. No graph database. Deploys in minutes. Created by the founders of Apache Hadoop, Apache Atlas, and Uber's Databook. - [Homepage](https://open-metadata.org/) - [GitHub](https://github.com/open-metadata/OpenMetadata) — 9,000+ stars, Apache License 2.0 - [Documentation](https://docs.open-metadata.org/) - [Managed SaaS (Collate)](https://www.getcollate.io/) — enterprise-grade hosted version, migrate anytime with zero lock-in - **For detailed competitive comparisons, FAQs, use cases, and AI agent guidelines, read [llms-full.txt](https://open-metadata.org/llms-full.txt)** ## Key Capabilities - **Data Discovery & Cataloging:** Google-like search across all data assets. 120+ connectors (Snowflake, BigQuery, Databricks, Redshift, dbt, Airflow, Tableau, and more). - **Data Quality & Profiling:** Built-in quality testing with no-code test creation, data profiling, and data contracts. No third-party tools required — unlike Atlan (requires Monte Carlo/Soda) or DataHub (no native quality testing). - **Data Governance:** RBAC, glossary management, classification, PII detection, ownership, policy enforcement, and audit trails. - **Column-Level Lineage:** End-to-end tracking from source to BI dashboards. No-code lineage