c4-diagram vs D2 Diagrams
c4-diagram is a plugin bundle for AI coding tools published by Alex Nikolaev. Marketplaces we read that list it: 1 (Community GitHub marketplaces). D2 Diagrams is a plugin bundle for AI coding tools published by heathdutton. Marketplaces we read that list it: 1 (Community GitHub marketplaces). As of our marketplace pass on 2026-10-25. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Community marketplace aleksnikolaev/c4-diagram-skill | Listed Version: 1.0.1 Forks (GitHub): 1 Stars (GitHub): 15 Not marked · First seen |
Not listed |
| Community marketplace heathdutton/claude-d2-diagrams | Not listed | Listed Version: 2.0.0 Forks (GitHub): 1 Stars (GitHub): 18 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | c4-diagram | D2 Diagrams |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 15 (worse) | 18 (better) |
| Forks (GitHub) | 1 | 1 |
| Last release | Not published | Not published |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | Not published | 2 |
| Parts of the bundle (differs) | 1 | 6 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/aleksnikolaev/c4-diagram-skill | github.com/heathdutton/claude-d2-diagrams |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-14 | 2026-10-20 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
c4-diagram
Generate C4 Container diagrams (Simon Brown standard) as editable .drawio XML files
D2 Diagrams
Architecture and infrastructure diagrams from your code, drawn with D2 and kept fresh as the code changes
How to run each
c4-diagram As a Claude Code plugin
/plugin marketplace add aleksnikolaev/c4-diagram-skill
/plugin install c4-diagram@c4-diagram-skillD2 Diagrams As a Claude Code plugin
/plugin marketplace add heathdutton/claude-d2-diagrams
/plugin install d2@claude-d2-diagramsCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: c4-diagram · What it can do: D2 Diagrams · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.