head to head · open source
diagram-design vs flint-chart
diagram-design has 64,736 GitHub stars, 4,269 forks, 42 open issues and last shipped 2 days ago. flint-chart has 4,537 stars, 268 forks, 32 open issues and last shipped 2 days ago. diagram-design leads on adoption by 1,327% (64,736 vs 4,537 stars). diagram-design is written in HTML under MIT; flint-chart is written in TypeScript under MIT. diagram-design has attracted 7% as many forks as stars, flint-chart 6%. flint-chart 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 | flint-chart | |
|---|---|---|
| GitHub stars | ★ 65K | ★ 4.5K |
| License | MIT | MIT |
| Written in | HTML | TypeScript |
| Last push | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 4.3K | ⑂ 268 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick diagram-design if
- You weight community size — 65K stars and counting
- You want the MIT license terms
- Your stack matches HTML
- You value the larger contributor base for long-term maintenance
pick flint-chart if
- You want the flint-chart feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and flint-chart 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 flint-chart
Flint: A Visualization Language for the AI Era Please visit: Flint Project Site Visual Themes MCP Server Guide 中文主页 Flint is a visualization intermediate language that lets AI agents turn simple, human editable chart specs into expressive, polished visualizations . Rather than requiring agents to hardcode verbose parameters for scales, axes, spacing, labels, and layout, Flint derives those decisions from a high level semantic specification, the data, and an optional visual theme (e.g., New York Times, Economist, Swiss, and McKinsey). A compact spec compiles to native Vega Lite, ECharts, Chart.js, Plotly specs…
read the full flint-chart overview →
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Frequently asked questions
Is diagram-design or flint-chart more popular?
diagram-design has 64,736 GitHub stars and flint-chart has 4,537. diagram-design has the larger community by that measure.
Are diagram-design and flint-chart free?
Both are open source. diagram-design is licensed under MIT and flint-chart under MIT. Neither carries a licence fee.
What is the difference between diagram-design and flint-chart?
diagram-design is written in HTML and flint-chart in TypeScript. 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 flint-chart?
Choose diagram-design if you want the larger community (64,736 stars) or its MIT licence terms. Choose flint-chart if its feature set, stack or MIT licence fits better. Both are self-hostable.