head to head · open source
Mermaid vs ScottPlot
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. ScottPlot has 6,796 stars, 1,021 forks, 242 open issues and last shipped 3 months ago. Mermaid leads on adoption by 1,239% (90,981 vs 6,796 stars). Mermaid is written in TypeScript under MIT; ScottPlot is written in C# under MIT. Mermaid has attracted 10% as many forks as stars, ScottPlot 15%. 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 | ScottPlot | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 6.8K |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-11-02 | 2026-08-15 |
| Forks | ⑂ 9.4K | ⑂ 1.0K |
| 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 ScottPlot if
- You want the ScottPlot feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and ScottPlot 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 ScottPlot
ScottPlot ScottPlot is a free and open source plotting library for .NET that makes it easy to interactively display large datasets. The ScottPlot Cookbook demonstrates how to create line plots, bar charts, pie graphs, scatter plots, and more with just a few lines of code. The ScottPlot Demo shows how to create plots in GUI environments with advanced interactive behaviors. ScottPlot supports Windows Forms, WPF, Console, Uno Platform, Blazor, Avalonia, Eto, Notebooks, and more! Visit for documentation and additional information Contributing: Due to Scott's medical status ScottPlot is open source but not open to…
read the full ScottPlot overview →
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Frequently asked questions
Is Mermaid or ScottPlot more popular?
Mermaid has 90,981 GitHub stars and ScottPlot has 6,796. Mermaid has the larger community by that measure.
Are Mermaid and ScottPlot free?
Both are open source. Mermaid is licensed under MIT and ScottPlot under MIT. Neither carries a licence fee.
What is the difference between Mermaid and ScottPlot?
Mermaid is written in TypeScript and ScottPlot in C#. 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 ScottPlot?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose ScottPlot if its feature set, stack or MIT licence fits better. Both are self-hostable.