25,600 stars · MPL-2.0 · v0.9.0 (2026-09-07) · Track this in Scout
A short text file becomes a finished diagram, so a picture can be kept beside the code and reviewed like code.
▶Repo detailsspecs
mermaid-js/mermaidAlso turns text into diagrams and is far more widely supported, because GitHub, GitLab and most note apps render it without any install, but its layout is less able to untangle a dense architecture picture.
Track this in Scout- plantuml/plantuml
The oldest text-to-diagram tool of the three, covering more diagram types than either, but it needs Java installed and its output looks noticeably more dated.
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jgraph/drawioThe editor behind diagrams.net, and the opposite approach: you drag shapes with a mouse, which is quicker for one picture and much worse for keeping fifty of them current.
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