head to head · open source
Mermaid vs radzen-blazor
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. radzen-blazor has 4,382 stars, 961 forks, 32 open issues and last shipped yesterday. Mermaid leads on adoption by 1,976% (90,981 vs 4,382 stars). Mermaid is written in TypeScript under MIT; radzen-blazor is written in C# under MIT. Mermaid has attracted 10% as many forks as stars, radzen-blazor 22%. radzen-blazor 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 | radzen-blazor | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 4.4K |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.4K | ⑂ 961 |
| 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 radzen-blazor if
- You want the radzen-blazor feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and radzen-blazor 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 radzen-blazor
Radzen Blazor Components ======================== The most sophisticated free UI component library for Blazor, featuring 145+ native components . MIT licensed, used by thousands of developers at companies like Microsoft, NASA, Porsche, Dell, Siemens, and DHL. Supports .NET 10, Blazor Server, Blazor WebAssembly, and .NET MAUI Blazor Hybrid. Online Demos · Documentation · Get Started Star this repo ⭐ to support the project and help other Blazor developers discover it. Quick start Install the NuGet package: Add to Imports.razor : Add the theme and script to App.razor : For the full setup guide including render…
read the full radzen-blazor overview →
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Frequently asked questions
Is Mermaid or radzen-blazor more popular?
Mermaid has 90,981 GitHub stars and radzen-blazor has 4,382. Mermaid has the larger community by that measure.
Are Mermaid and radzen-blazor free?
Both are open source. Mermaid is licensed under MIT and radzen-blazor under MIT. Neither carries a licence fee.
What is the difference between Mermaid and radzen-blazor?
Mermaid is written in TypeScript and radzen-blazor 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 radzen-blazor?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose radzen-blazor if its feature set, stack or MIT licence fits better. Both are self-hostable.