Best tools for Visualize database schemas as ERD diagrams

Lightweight open-source browser-based database GUI

Outerbase Studio is a lightweight, open-source database GUI that runs directly in your browser. It supports PostgreSQL, MySQL, and SQLite with a modern interface featuring intelligent query editor with auto-completion, multi-query execution, advanced data editing with staging and preview, and high-performance table rendering for thousands of rows. Also available as an Electron desktop client for databases requiring specialized drivers.

Database CI/CD and DevSecOps platform at scale

Bytebase is an open-source database DevSecOps platform that automates schema migrations, enforces SQL standards across 200+ lint rules, and provides fine-grained access control with dynamic data masking. Teams use it for GitOps-based database change management, SQL review, and compliance across PostgreSQL, MySQL, MongoDB, Snowflake, Oracle, SQL Server, and 20+ other databases. Available as self-hosted Docker or Kubernetes deployment, or as a managed cloud service.

Instant database schema diagrams from a single query

ChartDB is an open-source database diagramming tool that converts SQL queries into instant visual entity-relationship diagrams. It supports PostgreSQL, MySQL, SQL Server, MariaDB, SQLite, CockroachDB, and ClickHouse, enabling database engineers to visualize schemas, plan migrations, and generate DDL scripts across different SQL dialects using AI assistance. Available as a free cloud app at chartdb.io or self-hosted via Docker deployment.