ERD Online

ERD Online is an open-source tool for designing entity-relationship diagrams, offering robust features for modern data modeling. Key capabilities include: • Version control for schema changes • Real-time collaborative editing • Integration with multiple coding assistants • Open data format (projectJSON) • Diagramming with foreign key semantics This platform treats your database schema like code, providing Git-like versioning where every save creates a new version that can be diffed and rolled back. It facilitates real-time multi-user editing with presence indicators, streamlining reviews and approval flows for audited changes. Built for developers, database administrators, and data architects, ERD Online provides a transparent and auditable environment for schema design. It's ideal for teams needing advanced versioning, collaboration, and an open-source factual source for their ER diagrams, especially when working with coding assistants for schema generation and modification. A live demo is available without signup for quick evaluation.