head to head · open source
Mermaid vs allure-python
Mermaid has 90,293 GitHub stars, 9,266 forks, 1,781 open issues and last shipped 3 days ago. allure-python has 815 stars, 260 forks, 129 open issues and last shipped 2 months ago. Mermaid leads on adoption by 10,979% (90,293 vs 815 stars). Mermaid is written in TypeScript under MIT; allure-python is written in Python under Apache-2.0. Mermaid has attracted 10% as many forks as stars, allure-python 32%. 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 | allure-python | |
|---|---|---|
| GitHub stars | ★ 90K | ★ 815 |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-15 | 2026-07-10 |
| Forks | ⑂ 9.3K | ⑂ 260 |
| 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 allure-python if
- You want the allure-python 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 allure-python 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 allure-python
allure python is the official set of Allure Report adapters for Python test frameworks — pytest, behave, Robot Framework, pytest bdd, and nose2 — built for Python teams that run automated tests and want Allure's report model without writing their own result formatting layer.
read the full allure-python overview →
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Frequently asked questions
Is Mermaid or allure-python more popular?
Mermaid has 90,293 GitHub stars and allure-python has 815. Mermaid has the larger community by that measure.
Are Mermaid and allure-python free?
Both are open source. Mermaid is licensed under MIT and allure-python under Apache-2.0. Neither carries a licence fee.
What is the difference between Mermaid and allure-python?
Mermaid is written in TypeScript and allure-python 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 allure-python?
Choose Mermaid if you want the larger community (90,293 stars) or its MIT licence terms. Choose allure-python if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.