Diagrams.so vs OnUML
| Diagrams.so | OnUML | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $0.83/mo | $8/mo |
| Open source | No | No |
| Platforms | api, Web | api, Web |
| Free plan | Yes | Yes |
| Mermaid support | No | Yes |
| Diagram import | Yes | — |
| Platform | web | web |
| Export formats | .drawio, PNG, SVG, PDF, JPG | PNG, SVG |
Both are listed in Best AI Diagram Generators. On Samsung Mobile US Press, Diagrams.so scores higher on our published basis.