head to head · open source
Mermaid vs open-dronelog
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. open-dronelog has 1,579 stars, 218 forks, 29 open issues and last shipped 4 days ago. Mermaid leads on adoption by 5,662% (90,981 vs 1,579 stars). Mermaid is written in TypeScript under MIT; open-dronelog is written in TypeScript under AGPL-3.0. Mermaid has attracted 10% as many forks as stars, open-dronelog 14%. 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 | open-dronelog | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 1.6K |
| License | MIT | AGPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 9.4K | ⑂ 218 |
| 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 open-dronelog if
- You want the open-dronelog feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and open-dronelog 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 open-dronelog
OPEN DRONELOG A high performance application for analyzing drone flight logs (DJI and Litchi CSV formats). Available as a Tauri v2 desktop app or a Docker deployable web app. Built with DuckDB and React. [!IMPORTANT] DJI is a registered trademark of SZ DJI Technology Co., Ltd. DroneLogbook® is a registered trademark of DroneAnalytics Inc. Litchi is a trademark of VC Technology Ltd. Airdata or Airdata UAV is a trademark of Airdata UAV, Inc. This project is independent and is not affiliated with, sponsored by, authorized by, or endorsed by SZ DJI Technology Co., Ltd., DroneAnalytics Inc., VC Technology Ltd…
read the full open-dronelog overview →
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Frequently asked questions
Is Mermaid or open-dronelog more popular?
Mermaid has 90,981 GitHub stars and open-dronelog has 1,579. Mermaid has the larger community by that measure.
Are Mermaid and open-dronelog free?
Both are open source. Mermaid is licensed under MIT and open-dronelog under AGPL-3.0. Neither carries a licence fee.
What is the difference between Mermaid and open-dronelog?
Mermaid is written in TypeScript and open-dronelog 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 open-dronelog?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose open-dronelog if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.