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