Comparison
Diagram Design vs Simulacra
Diagram Design has more GitHub stars (56,363 vs 47). Diagram Design was updated more recently (last commit 2d ago). Data comes straight from GitHub and refreshes daily.
Diagram Design
Editorial diagram design for Claude Code, Codex, GitHub Copilot, Cursor, Factory Droid, and Pi. 44 diagram types. Self-contained HTML + SVG. No shadows. No Mermaid slop.
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/plugin marketplace add cathrynlavery/diagram-design
Simulacra
Ghost personas review your code before it ships. Find edge cases, race conditions, and business logic bugs before production.
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/plugin marketplace add mturac/simulacra| Metric | Diagram Design | Simulacra |
|---|---|---|
| Type | Agent skill | Agent skill |
| GitHub stars | 56,363 | 47 |
| Stars, last 7 days | +535 | n/a |
| Forks | 3,573 | 0 |
| Upvotes | 1 | 0 |
| Language | HTML | n/a |
| License | MIT | MIT |
| Last commit | 2d ago | 4mo ago |
| Created | Apr 2026 | May 2026 |
| Categories | Design & frontend, Data & analytics, Dev tools | Dev tools |