head to head · open source
diagram-design vs electricitymaps-contrib
diagram-design has 64,318 GitHub stars, 4,247 forks, 42 open issues and last shipped 2 days ago. electricitymaps-contrib has 4,047 stars, 1,067 forks, 125 open issues and last shipped yesterday. diagram-design leads on adoption by 1,489% (64,318 vs 4,047 stars). diagram-design is written in HTML under MIT; electricitymaps-contrib is written in Python under AGPL-3.0. diagram-design has attracted 7% as many forks as stars, electricitymaps-contrib 26%. electricitymaps-contrib 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 | electricitymaps-contrib | |
|---|---|---|
| GitHub stars | ★ 64K | ★ 4.0K |
| License | MIT | AGPL-3.0 |
| Written in | HTML | Python |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 4.2K | ⑂ 1.1K |
| 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 electricitymaps-contrib if
- You want the electricitymaps-contrib feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and electricitymaps-contrib 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 electricitymaps-contrib
Electricity Maps A collection of parsers to collect and standardize electricity data such as production, exchanges and price from across the globe. app.electricitymaps.com » Introduction This project aims to provide a free, open source, and transparent way to collect electricity data. We fetch the raw data from public, free, and official sources. They include official government and transmission system operators' data. This data powers the Electricity Maps platform, which includes our flow tracing algorithm, estimation models, forecast engine and much more. View it online app.electricitymaps.com, or download the…
read the full electricitymaps-contrib overview →
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Frequently asked questions
Is diagram-design or electricitymaps-contrib more popular?
diagram-design has 64,318 GitHub stars and electricitymaps-contrib has 4,047. diagram-design has the larger community by that measure.
Are diagram-design and electricitymaps-contrib free?
Both are open source. diagram-design is licensed under MIT and electricitymaps-contrib under AGPL-3.0. Neither carries a licence fee.
What is the difference between diagram-design and electricitymaps-contrib?
diagram-design is written in HTML and electricitymaps-contrib 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 electricitymaps-contrib?
Choose diagram-design if you want the larger community (64,318 stars) or its MIT licence terms. Choose electricitymaps-contrib if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.