mermaid vs openmct
mermaid and openmct share 3 technologies: D3, @braintree/sanitize-url, and marked. mermaid is written in TypeScript and openmct in JavaScript.
LinkedInWhat they share and what sets them apart
mermaid-js
mermaid
Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown
TypeScript91kRead on November 9, 2026, at commit a0fd6b8What is mermaid built with?Only in mermaid
In common
nasa
openmct
A web based mission control framework.
JavaScript13.2kRead on November 10, 2026, at commit e09bfafWhat is openmct built with?Only in openmct
- Vue
- d3-axis
d3-selection
- d3-shape
- sanitize-html
- html2canvas
Side by side
mermaidopenmct
SizeLines written by people and agents, without generated ones; code files, without tests.
mermaid234,005 lines written632 code files
openmct172,893 lines written868 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
mermaid5.1% of its commits signed by AIWith Claude Code, Codex, Cursor, GitHub Copilot, and CodeRabbit
openmct0% of its commits signed by AI
ActivityFrom GitHub and its history, on the day SeeRepo read it.
mermaidLast push November 9, 202611,996 commits91,048 stars
openmctLast push October 15, 20266,919 commits13,208 stars
TestsThe files that test the code, and the share of code files a test imports.
mermaid507 test files42.4% of its code files have a test that imports them
openmct168 test files1.7% of its code files have a test that imports them
Frequently asked questions
Which is bigger, mermaid or openmct?
mermaid, with 234,005 lines written; openmct has 172,893.
The proof: mermaid-js/mermaid's code at commit a0fd6b8
Which has more GitHub stars, mermaid or openmct?
mermaid, with 91,048 stars; openmct has 13,208.
The proof: mermaid-js/mermaid on GitHub
Which has more tests, mermaid or openmct?
mermaid, with 507 test files; openmct has 168.
The proof: mermaid-js/mermaid's code at commit a0fd6b8
Which was updated more recently, mermaid or openmct?
mermaid: its last push was on November 9, 2026, and openmct's on October 15, 2026.
The proof: mermaid-js/mermaid's commits on GitHub
Which has more commits signed by AI, mermaid or openmct?
mermaid: an AI signed 5.1% of its commits, with Claude Code, Codex, Cursor, GitHub Copilot, and CodeRabbit.
The proof: the commits each tool signed in mermaid-js/mermaid
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