ChartDB is an open source, web‑based database diagramming tool that instantly visualizes your schema, whether from popular DBMSs like PostgreSQL, MySQL, SQL Server, SQLite, ClickHouse, and Oracle, or via a single query, without needing database access or complex setup. You can edit diagrams interactively using drag‑and‑drop, add annotations, or customize relationships, then export clean, dialect‑specific SQL DDL scripts or share diagrams as images. ChartDB Cloud accelerates workflows further with features like real‑time collaboration, live cursors, team avatars, and synced edits, plus auto‑saving of your work. Its AI assistant enhances productivity by detecting missing relationships, recommending foreign keys, and suggesting schema optimizations with a single click. Diagrams stay current through automated schema synchronization via a secure syncer CLI, ideal for CI/CD pipelines, preserving layout and styling even as your data model evolves.