head to head · open source
Mermaid vs react-native-chart-kit
Mermaid has 90,299 GitHub stars, 9,266 forks, 1,781 open issues and last shipped 4 days ago. react-native-chart-kit has 3,113 stars, 675 forks, 6 open issues and last shipped 13 days ago. Mermaid leads on adoption by 2,801% (90,299 vs 3,113 stars). Mermaid is written in TypeScript under MIT; react-native-chart-kit is written in TypeScript under MIT. Mermaid has attracted 10% as many forks as stars, react-native-chart-kit 22%. Mermaid was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (typescript), so they are genuine substitutes rather than adjacent tools.
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 | react-native-chart-kit | |
|---|---|---|
| GitHub stars | ★ 90K | ★ 3.1K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-15 | 2026-09-06 |
| Forks | ⑂ 9.3K | ⑂ 675 |
| 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 react-native-chart-kit if
- You want the react-native-chart-kit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and react-native-chart-kit 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 react-native-chart-kit
react native chart kit is an MIT licensed TypeScript charting library for React Native that renders line, area, bar, pie, donut, progress, and contribution heatmap charts as SVG, built for mobile developers shipping dashboards, reports, and data rich apps.
read the full react-native-chart-kit overview →
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Frequently asked questions
Is Mermaid or react-native-chart-kit more popular?
Mermaid has 90,299 GitHub stars and react-native-chart-kit has 3,113. Mermaid has the larger community by that measure.
Are Mermaid and react-native-chart-kit free?
Both are open source. Mermaid is licensed under MIT and react-native-chart-kit under MIT. Neither carries a licence fee.
What is the difference between Mermaid and react-native-chart-kit?
Mermaid is written in TypeScript and react-native-chart-kit in TypeScript. 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 react-native-chart-kit?
Choose Mermaid if you want the larger community (90,299 stars) or its MIT licence terms. Choose react-native-chart-kit if its feature set, stack or MIT licence fits better. Both are self-hostable.