head to head · open source
Mermaid vs kepler.gl
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. kepler.gl has 12,077 stars, 1,963 forks, 452 open issues and last shipped yesterday. Mermaid leads on adoption by 653% (90,981 vs 12,077 stars). Mermaid is written in TypeScript under MIT; kepler.gl is written in TypeScript under MIT. Mermaid has attracted 10% as many forks as stars, kepler.gl 16%. kepler.gl 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 | kepler.gl | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 12K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.4K | ⑂ 2.0K |
| 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 kepler.gl if
- You want the kepler.gl feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and kepler.gl 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 kepler.gl
kepler.gl Website Demo App Docs [Kepler.gl][web] is a data agnostic, high performance web based application for visual exploration of large scale geolocation data sets. Built on top of MapLibre GL and deck.gl, kepler.gl can render millions of points representing thousands of trips and perform spatial aggregations on the fly. Kepler.gl is also a React component that uses Redux to manage its state and data flow. It can be embedded into other React Redux applications and is highly customizable. For information on how to embed kepler.gl in your app take a look at the documentation. Links [Website][web] [Demo][demo…
read the full kepler.gl overview →
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Frequently asked questions
Is Mermaid or kepler.gl more popular?
Mermaid has 90,981 GitHub stars and kepler.gl has 12,077. Mermaid has the larger community by that measure.
Are Mermaid and kepler.gl free?
Both are open source. Mermaid is licensed under MIT and kepler.gl under MIT. Neither carries a licence fee.
What is the difference between Mermaid and kepler.gl?
Mermaid is written in TypeScript and kepler.gl 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 kepler.gl?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose kepler.gl if its feature set, stack or MIT licence fits better. Both are self-hostable.