Compare software

Mermaid vs dbdiagram.io: catalog facts
Mermaid	dbdiagram.io
Free Free and open source under the MIT licence.	Free Described on its site as a free tool.
Web, Command line	Web
Diagrams are plain text, so they diff and review like code Rendered natively by GitHub, GitLab and most documentation generators	Diagrams generated from plain text Nothing to install
Layout is automatic, so fine control over positioning is limited Complex diagrams become hard to read in source form	Requires learning its diagram language Runs only in the browser
Web application, Downloadable app	Web application
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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