head to head · open source
Mermaid vs Redash
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. Redash has 28,860 stars, 4,634 forks, 805 open issues and last shipped yesterday. Mermaid leads on adoption by 215% (90,981 vs 28,860 stars). Mermaid is written in TypeScript under MIT; Redash is written in TypeScript under BSD-2-Clause. Mermaid has attracted 10% as many forks as stars, Redash 16%. Redash was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (javascript), 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.
← all 20902 open source comparisons
Side by side
| Mermaid | Redash | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 29K |
| License | MIT | BSD-2-Clause |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.4K | ⑂ 4.6K |
| 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 Redash if
- You want the Redash feature set and don't need the biggest community
- You prefer the BSD-2-Clause license terms
- Your stack matches TypeScript
- You evaluated both and Redash 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 Redash
Redash is designed to enable anyone, regardless of the level of technical sophistication, to harness the power of data big and small. SQL users leverage Redash to explore, query, visualize, and share data from any data source. Their work, in turn, enables anybody in their organization to use the data. Every day, millions of users at thousands of organizations around the world use Redash to develop insights and make data driven decisions. Redash features: 1. Browser based : Everything in your browser, with a shareable URL. 2. Ease of use : Become immediately productive with data without the need to master complex…
read the full Redash overview →
More in Data & Analytics
Related comparisons
More Business Intelligence & Reporting projects
Compare either of these against the rest of the Business Intelligence & Reporting field.
Frequently asked questions
Is Mermaid or Redash more popular?
Mermaid has 90,981 GitHub stars and Redash has 28,860. Mermaid has the larger community by that measure.
Are Mermaid and Redash free?
Both are open source. Mermaid is licensed under MIT and Redash under BSD-2-Clause. Neither carries a licence fee.
What is the difference between Mermaid and Redash?
Mermaid is written in TypeScript and Redash 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 Redash?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose Redash if its feature set, stack or BSD-2-Clause licence fits better. Both are self-hostable.