Comparison
Spec Forge vs Diagram Design
Diagram Design has more GitHub stars (56,131 vs 10). Diagram Design was updated more recently (last commit 12h ago). Data comes straight from GitHub and refreshes daily.
Spec Forge
Generate industry-standard specifications — PRD, SRS, Technical Design, and Test Plan — each usable standalone or as part of a full traceability chain
$
/plugin install tercel/spec-forge
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.
$
/plugin marketplace add cathrynlavery/diagram-design| Metric | Spec Forge | Diagram Design |
|---|---|---|
| Type | Agent skill | Agent skill |
| GitHub stars | 10 | 56,131 |
| Stars, last 7 days | n/a | +303 |
| Forks | 0 | 3,556 |
| Upvotes | 0 | 0 |
| Language | Python | HTML |
| License | MIT | MIT |
| Last commit | 1mo ago | 12h ago |
| Created | Feb 2026 | Apr 2026 |
| Categories | Docs & writing, Dev tools, Productivity | Design & frontend, Data & analytics, Dev tools |