head to head · open source
diagram-design vs vizro
diagram-design has 64,318 GitHub stars, 4,247 forks, 42 open issues and last shipped 2 days ago. vizro has 3,818 stars, 305 forks, 37 open issues and last shipped yesterday. diagram-design leads on adoption by 1,585% (64,318 vs 3,818 stars). diagram-design is written in HTML under MIT; vizro is written in Python under Apache-2.0. diagram-design has attracted 7% as many forks as stars, vizro 8%. vizro was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (data-visualization), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| diagram-design | vizro | |
|---|---|---|
| GitHub stars | ★ 64K | ★ 3.8K |
| License | MIT | Apache-2.0 |
| Written in | HTML | Python |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 4.2K | ⑂ 305 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick diagram-design if
- You weight community size — 64K stars and counting
- You want the MIT license terms
- Your stack matches HTML
- You value the larger contributor base for long-term maintenance
pick vizro if
- You want the vizro feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and vizro fits your workflow better
About diagram-design
Diagram Design Editorial diagrams your designer won't hate. New in 2.0 — the Loop: flywheels with a shared memory hub. The dashed lines are the write backs. New in 2.3: semantic system patterns and optional accessible motion, while static output stays the default. New in 2.5.10: ten more layout grammars — Sankey, fishbone, Wardley map, kanban, user journey, deployment, dependency graph, UML class, story map, and database schema. 39 editorial diagram types for Claude Code, Codex, Factory Droid, Pi, and Agent Skills compatible hosts. Self contained HTML + SVG. No shadows. No Mermaid slop. Semantic patterns…
read the full diagram-design overview →
About vizro
Vizro is a low code toolkit for building high quality data visualization apps Documentation Get Started What is Vizro? Vizro is an open source Python based toolkit. Use it to build beautiful and powerful data visualization apps quickly and easily, without needing advanced engineering or visual design expertise. Then customize and deploy your app to production at scale. In just a few lines of simple low code configuration, with in built visual design best practices, you can quickly assemble high quality, multi page prototypes, that are production ready. Every Vizro app is defined by a simple configuration, using…
read the full vizro overview →
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Frequently asked questions
Is diagram-design or vizro more popular?
diagram-design has 64,318 GitHub stars and vizro has 3,818. diagram-design has the larger community by that measure.
Are diagram-design and vizro free?
Both are open source. diagram-design is licensed under MIT and vizro under Apache-2.0. Neither carries a licence fee.
What is the difference between diagram-design and vizro?
diagram-design is written in HTML and vizro in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, diagram-design or vizro?
Choose diagram-design if you want the larger community (64,318 stars) or its MIT licence terms. Choose vizro if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.