drawDB is a web‑based tool that lets developers and DBAs create, edit, and share entity‑relationship diagrams directly in the browser. It supports forward and reverse engineering, letting you generate SQL from diagrams or import existing schemas. The platform is free, open‑source, and integrates with common version‑control workflows, making it ideal for collaborative schema design and documentation across teams.
D2 is a concise scripting language that lets you generate diagrams directly from plain text. It focuses on simplicity and readability, making it easy to embed visualizations in documentation and codebases. Designed for self‑hosted environments, D2 runs in the browser and can be integrated into CI pipelines, providing free, on‑premise diagram generation without vendor lock‑in.
- Completely free and open source.
- Runs entirely in the browser—no installation required.
- Supports both forward and reverse engineering of multiple SQL dialects.
- Integrates with GitHub/GitLab for version‑controlled diagram files.
- Zero cost, fully free
- Self‑hosted for full data control
- Simple, readable syntax reduces learning curve
- Integrates easily with CI pipelines and GitHub
- Limited offline functionality; requires internet access.
- Advanced styling options are basic compared to paid diagram tools.
- No built‑in data population or mock data generation features.
- Limited to 2D diagram types
- No native desktop application, relies on web UI or CLI
- Advanced styling requires manual configuration
More alternatives & similar tools
Alternatives to drawDB
View all →
Alternatives to d2
View all →The Verdict
AI-generated from listing datadrawDB is the safer default for developers needing visual, drag‑and‑drop ER modeling with Git versioning, while d2 trades visual UI for script‑based, CI‑friendly diagram generation.
Key differences
- •drawDB offers an interactive canvas for drag‑and‑drop ER diagrams; d2 uses a markdown‑like text syntax.
- •drawDB provides built‑in SQL generation and reverse engineering; d2 focuses on generic diagram rendering without SQL output.
- •drawDB includes real‑time collaboration and GitHub/GitLab sync; d2 emphasizes self‑hosting, CI/CD integration, and theming via code.
- •drawDB runs entirely in the browser with no install; d2 requires a Go‑based CLI or self‑hosted web editor.
- •drawDB’s styling is limited but visual; d2’s styling is configurable through text directives, requiring manual setup.
Pricing & value
Both are free and open source; value depends on required workflow (visual UI vs script‑based).
Ease of use / learning curve
drawDB’s drag‑and‑drop canvas is intuitive for non‑programmers; d2 requires learning its markdown‑like syntax.
Features & depth
drawDB includes forward/reverse SQL generation, validation, and export formats; d2 lacks SQL generation and data validation.
Integrations & ecosystem
drawDB integrates with GitHub, GitLab, and Slack; d2 integrates with GitHub Actions but fewer direct collaboration tools.
Collaboration
drawDB supports real‑time collaborative editing on a shared canvas; d2 has no built‑in real‑time collaboration.
Scalability
d2’s CLI and self‑hosted deployment scale well in CI/CD pipelines; drawDB relies on browser session and internet access.
Support
Both provide email and GitHub Issues as support channels.
Choose drawDB if…
Developers/DBAs who need visual ER modeling, SQL export, and real‑time team collaboration.
Choose d2 if…
Technical writers or dev teams that prefer script‑driven diagrams, CI/CD automation, and self‑hosted control.
Common questions
Is there any cost to use either tool?
Both drawDB and d2 are free and open source.
Can I generate SQL CREATE statements from my diagrams?
Yes, drawDB can generate CREATE TABLE statements for multiple SQL dialects; d2 does not provide SQL generation.
Which tool supports version‑controlled diagrams?
drawDB syncs diagram files with GitHub or GitLab repositories; d2 can be stored in Git but lacks built‑in sync features.