head to head · open source
Mermaid vs XCharts
Mermaid has 90,299 GitHub stars, 9,266 forks, 1,781 open issues and last shipped 3 days ago. XCharts has 3,784 stars, 599 forks, 8 open issues and last shipped 2 months ago. Mermaid leads on adoption by 2,286% (90,299 vs 3,784 stars). Mermaid is written in TypeScript under MIT; XCharts is written in C# under MIT. Mermaid has attracted 10% as many forks as stars, XCharts 16%. 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 | XCharts | |
|---|---|---|
| GitHub stars | ★ 90K | ★ 3.8K |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-09-15 | 2026-07-17 |
| Forks | ⑂ 9.3K | ⑂ 599 |
| 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 XCharts if
- You want the XCharts feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and XCharts 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 XCharts
XCharts A powerful, easy to use, configurable charting and data visualization library for Unity. Unity数据可视化图表插件。 English README XCharts 是一款基于 UGUI 的功能强大、简单易用的 Unity 数据可视化图表插件。它提供了丰富的图表类型和灵活的配置选项，帮助开发者快速实现专业级的数据可视化效果。支持折线图、柱状图、饼图、雷达图、散点图、热力图、环形图、K线图、极坐标、平行坐标等十多种常用的内置图表。提供3D饼图、3D柱图、3D金字塔、漏斗图、仪表盘、水位图、象形柱图、甘特图、矩形树图、桑基图、3D折线图、关系图等十多种高级扩展图表。 XCharts 官方主页 XCharts 在线示例 XCharts 教程：5分钟上手 XCharts XCharts API文档 XCharts 常见问题 XCharts 配置项手册 XCharts 更新日志 XCharts 订阅服务 特性 纯代码绘制 ：图表完全通过代码生成，无需额外贴图或 Shader 资源，轻量高效。 可视化配置 ：提供直观的参数配置界面，支持实时预览效果，并可在运行时动态修改配置和数据。 高度定制化 ：支持从主题、组件到数据项的全面参数设置，同时允许通过代码自定义绘制逻辑、回调函数及图表实现。 多内置图表 ：支持线图、柱状图、饼图、雷…
read the full XCharts overview →
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Frequently asked questions
Is Mermaid or XCharts more popular?
Mermaid has 90,299 GitHub stars and XCharts has 3,784. Mermaid has the larger community by that measure.
Are Mermaid and XCharts free?
Both are open source. Mermaid is licensed under MIT and XCharts under MIT. Neither carries a licence fee.
What is the difference between Mermaid and XCharts?
Mermaid is written in TypeScript and XCharts 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 XCharts?
Choose Mermaid if you want the larger community (90,299 stars) or its MIT licence terms. Choose XCharts if its feature set, stack or MIT licence fits better. Both are self-hostable.