D2 vs Mermaid

D2 and Mermaid differ on platforms, license, since, origin.

Modern text-to-diagram language.

Platforms
Local
License
MPL-2.0
Since
2022
Origin
United States

About D2

Diagrams as text: flowcharts, sequences, ER.

Platforms
Web, Markdown
License
MIT
Since
2014
Origin
Community

About Mermaid

Field by field

FieldD2Mermaid
Price tierOpen sourceOpen source
PlatformsLocalWeb, Markdown
LicenseMPL-2.0MIT
Since20222014
OriginUnited StatesCommunity
StatusActiveActive

Moving from D2 to Mermaid is medium. Catalogued 2026-11-09.