Pencil Project vs StarUML
| Pencil Project | StarUML | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | Free | $129/mo |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | extension, Linux, macOS, Windows |
| Free plan | Yes | No |
| Diagram types | GUI mockups, wireframes, flowcharts, desktop UI, web UI, Android UI, iOS UI | UML 2, entity-relationship, data flow, flowchart, mindmap, C4, SysML, BPMN, UI wireframe, AWS architecture, GCP architecture, Azure architecture |
| Real-time collaboration | — | Yes |
Both are listed in Best Diagramming Software, Best Diagram Software. On The Geeks Club, StarUML scores higher on our published basis.