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mmdr vs Kroki: catalog facts
mmdr	Kroki
Free Free and open source under the MIT licence.	Free The public kroki.io service and interactive editor are free to use.
Windows, Command line	Web, Self-hosted
No browser or Node.js dependency Much faster than mermaid-cli	One API for dozens of text-based diagram languages Live in-browser editor for trying each format
Under active development, so output may differ from official Mermaid No packaged GitHub releases	Aimed at developers and documentation tooling rather than freehand drawing Each diagram language has its own syntax to learn
Downloadable app	Web application, Self-hosted, Hosted service
Open source	Closed source
License: MIT	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.