There are 3 open-source alternatives to Draw.io in this directory. The most popular is Mermaid with 87.3k GitHub stars, followed by tldraw(46.3k stars). All are open source, free to use, and many can be self-hosted.
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Mermaid A tool for generating diagrams such as flowcharts, sequence diagrams, and more from text, in a similar manner to markdown syntax. This tool is particularly useful for visualizing complex processes and information in an accessible and easy-to-understand format. | 87.3k | TypeScript | MIT License |
| 2 | tldraw A versatile whiteboard SDK and infinite canvas SDK to build interactive drawing applications. | 46.3k | TypeScript | Other |
| 3 | Drawdb Free, simple, and intuitive online database diagram editor and SQL generator. | 37.0k | JavaScript | GNU Affero General Public License v3.0 |
A tool for generating diagrams such as flowcharts, sequence diagrams, and more from text, in a similar manner to markdown syntax. This tool is particularly useful for visualizing complex processes and information in an accessible and easy-to-understand format.
A versatile whiteboard SDK and infinite canvas SDK to build interactive drawing applications.
Free, simple, and intuitive online database diagram editor and SQL generator.
The top three are Mermaid(87.3k stars), tldraw(46.3k stars), Drawdb(37.0k stars). All are open source and free to use.
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
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