Astah Professional vs Dia
| Astah Professional | Dia | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | Yes | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | api, Linux, macOS, Windows | Linux, macOS, Windows |
| Free plan | No | Yes |
| Paid from | 11.99 /user/mo | — |
| Diagram types | Class, object, communication, timing, component, deployment, composite structure, use case, sequence, activity, statemachine, package, requirement, mind map, ER, flowchart, CRUD, data flow, traceability map, Eriksson-Penker process | Entity-relationship diagrams; UML diagrams; flowcharts; network diagrams |
| Real-time collaboration | No | — |
| Export formats | JPEG, PNG, EMF, SVG, RTF, HTML, CSV, XML, CMOF | EPS; SVG; XFIG; WMF; PNG |
| Import formats | Excel, XML | Dia XML (.dia); Visio XML (.vdx) |
| Desktop app | Yes | Yes |
| Version history | No | — |
Both are listed in Best Diagram Software. On Freedom251, Dia scores higher on our published basis.