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.
Notion is a single space where you can think, write, and plan. Capture thoughts, manage projects, or even run an entire company.
Free for individuals; paid plans start at $10/user/month for teams.
- Zero cost, fully free
- Self‑hosted for full data control
- Simple, readable syntax reduces learning curve
- Integrates easily with CI pipelines and GitHub
- Extremely flexible - adapts to almost any workflow
- Clean, minimal interface
- Strong template ecosystem
- Good mobile apps
- Limited to 2D diagram types
- No native desktop application, relies on web UI or CLI
- Advanced styling requires manual configuration
- Can get slow with very large databases
- Steep learning curve for advanced features
- Offline mode is limited
What reviewers say
d2 Reviews
No reviews yet.
Notion Reviews
4.3 (4)Solid choice
Our team evaluated a few options before settling on Notion. Strong template ecosystem. No major complaints so far. Would recommend to anyone considering it.
Highly recommend Notion
Notion has quickly become part of our daily workflow. Good mobile apps. One minor gripe: offline mode is limited, but it hasn't been a dealbreaker. Would recommend to anyone considering it.
Great tool for productivity
Been a daily user of Notion for a while now. Extremely flexible - adapts to almost any workflow. One minor gripe: steep learning curve for advanced features, but it hasn't been a dealbreaker. Would recommend to anyone considering it.
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