head to head · open source
Mermaid vs datavzrd
Mermaid has 90,777 GitHub stars, 9,375 forks, 1,781 open issues and last shipped 2 days ago. datavzrd has 681 stars, 41 forks, 15 open issues and last shipped 2 days ago. Mermaid leads on adoption by 13,230% (90,777 vs 681 stars). Mermaid is written in TypeScript under MIT; datavzrd is written in Rust under MIT. Mermaid has attracted 10% as many forks as stars, datavzrd 6%. 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 | datavzrd | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 681 |
| License | MIT | MIT |
| Written in | TypeScript | Rust |
| Last push | 2026-10-20 | 2026-10-20 |
| Forks | ⑂ 9.4K | ⑂ 41 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mermaid if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick datavzrd if
- You want the datavzrd feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and datavzrd fits your workflow better
About Mermaid
Mermaid Generate diagrams from Markdown like text. Live Editor! 📖 Documentation 🚀 Getting Started 🌐 CDN 🙌 Join Us 简体中文 Try Live Editor previews of future releases: Develop Next :trophy: Mermaid was nominated and won the JS Open Source Awards (2019) in the category "The most exciting use of technology"!!! Thanks to all involved, people committing pull requests, people answering questions! 🙏 Table of content Expand contents About Examples Release Related projects Contributors Security and safe diagrams Reporting vulnerabilities Appreciation About Mermaid is a JavaScript based diagramming and charting tool…
read the full Mermaid overview →
About datavzrd
A tool to create visual and interactive HTML reports from collections of tabular data (CSV, TSV, JSON or Parquet). Reports include automatically generated vega lite histograms per column. Plots can be fully customized by users via a config file. These also allow the user to add linkouts to other websites or link between multiple tables. Documentation is available via the official website: An example report can be viewed online with the corresponding config file. Citation If you use datavzrd in your research, please cite: Wiegand F, Lähnemann D, Mölder F, Uzuner H, Prinz A, Schramm A, Köster J. Datavzrd: Rapid…
read the full datavzrd overview →
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Frequently asked questions
Is Mermaid or datavzrd more popular?
Mermaid has 90,777 GitHub stars and datavzrd has 681. Mermaid has the larger community by that measure.
Are Mermaid and datavzrd free?
Both are open source. Mermaid is licensed under MIT and datavzrd under MIT. Neither carries a licence fee.
What is the difference between Mermaid and datavzrd?
Mermaid is written in TypeScript and datavzrd in Rust. 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 datavzrd?
Choose Mermaid if you want the larger community (90,777 stars) or its MIT licence terms. Choose datavzrd if its feature set, stack or MIT licence fits better. Both are self-hostable.