head to head · open source
Mermaid vs hypertools
Mermaid has 90,299 GitHub stars, 9,266 forks, 1,781 open issues and last shipped 4 days ago. hypertools has 1,887 stars, 164 forks, 8 open issues and last shipped 7 days ago. Mermaid leads on adoption by 4,685% (90,299 vs 1,887 stars). Mermaid is written in TypeScript under MIT; hypertools is written in Python under MIT. Mermaid has attracted 10% as many forks as stars, hypertools 9%. Mermaid was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Mermaid | hypertools | |
|---|---|---|
| GitHub stars | ★ 90K | ★ 1.9K |
| License | MIT | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-09-15 | 2026-09-12 |
| Forks | ⑂ 9.3K | ⑂ 164 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mermaid if
- You weight community size — 90K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick hypertools if
- You want the hypertools feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and hypertools fits your workflow better
About Mermaid
Mermaid is a JavaScript based diagramming tool that renders diagrams from Markdown like text definitions. It lives in the JavaScript/TypeScript ecosystem and operates both in the browser and in Node.js environments. The project’s core purpose is to eliminate the gap between software development and documentation by letting developers write diagrams alongside code, avoiding the rot and overhead of manual diagram maintenance.
read the full Mermaid overview →
About hypertools
HyperTools is an MIT licensed Python toolbox for gaining geometric insights into high dimensional data, built for data scientists, researchers, and analysts who need to see the structure of datasets they cannot plot directly.
read the full hypertools overview →
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Frequently asked questions
Is Mermaid or hypertools more popular?
Mermaid has 90,299 GitHub stars and hypertools has 1,887. Mermaid has the larger community by that measure.
Are Mermaid and hypertools free?
Both are open source. Mermaid is licensed under MIT and hypertools under MIT. Neither carries a licence fee.
What is the difference between Mermaid and hypertools?
Mermaid is written in TypeScript and hypertools 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, Mermaid or hypertools?
Choose Mermaid if you want the larger community (90,299 stars) or its MIT licence terms. Choose hypertools if its feature set, stack or MIT licence fits better. Both are self-hostable.