C4 system context diagram
Place a software system among the people and other systems it works with.
Diagram · origin tag c4/context · The C4 Model
Availability
| Host | State | How to get it |
|---|---|---|
| Standalone | Prototype | Not yet released |
| Desktop | Prototype | Not yet released |
| IntelliJ Platform | Not planned | Not planned |
| Visual Studio Code | Not planned | Not planned |
| Eclipse | Not planned | Not planned |
| ThinkRail | Not planned | Not planned |
| Notion | Not planned | Not planned |
| Claude | Not planned | Not planned |
What it is for
C4 system context diagram (one software system, with the people who use it and the other systems it depends on)
Why a specialized view helps
C4 views are zoom levels of one model; a dedicated tool keeps each level consistent with the next instead of redrawing boxes by hand.
File formats
Not described yet.
Screenshots

Standalone, at 3e2df46
What is visible: The system context: the Manufacturing Execution System in the middle, the five people above it and the external systems below; Toolbox showing Person and Software System. Nothing selected.
Why it matters: The system sits among the people and systems it works with, drawn from the model rather than by hand, so the widest C4 view agrees with every more detailed one.
Licence: Apache-2.0
Background
Focus areas
Sources
etalii-adp/etalii.adp.ide.standalone@9b232f0docs/tools.md, licence Apache-2.0etalii-adp/etalii.adp.ide.intellij@dc9c697docs/tools.md, licence Apache-2.0etalii-adp/etalii.adp.ide.vscode@ab93d8fdocs/tools.md, licence Apache-2.0etalii-adp/etalii.adp.ide.standalone@3e2df46docs/screenshots/c4-context.png, licence Apache-2.0- Notion, edited (page
3e7be2fd-05b6-8165-a43a-c1ea2cd22394), licence Apache-2.0