D2 vs Pencil Project
| D2 | Pencil Project | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Web, Windows | Windows, macOS, Linux |
| Free plan | Yes | Yes |
| Diagram types | software architecture diagrams; UML class diagrams; sequence diagrams | GUI mockups, wireframes, flowcharts, desktop UI, web UI, Android UI, iOS UI |
| Offline editing | Yes | — |
| Import/export formats | D2 (.d2); SVG; PNG; PDF; PPTX; GIF; ASCII | — |
Both are listed in Best Diagramming Software. On Inferse, D2 scores higher on our published basis.