Altova UModel vs UMLet
Altova UModel
altova.comUMLet
umlet.comSide by side
| Figure | Altova UModel | UMLet |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Plans published | 3 | 2 |
| Spec score · UML Modeling Software | 8.2 (#4) | 7.9 (#12) |
| Founded | 1992 | 2001 |
| Integrations | UModel integrates with Eclipse and Microsoft Visual Studio, and its integration package is available as a free download. | UMLet is available as a stand-alone app, Eclipse plugin, browser app called UMLetino, and Visual Studio Code extension. |
| Purpose | UModel is a visual UML software modeling tool that can generate source code and project documentation or reverse engineer existing programs into UML diagrams. | UMLet is a free, open-source UML tool aimed at creating UML sketches quickly. |
| Support | Altova provides a technical support form and lists online training among its support resources. | The project asks users to email [email protected] or create a GitHub ticket for bugs and feedback. |
Plans
Altova UModel
- UModel 2026 Basic Edition$209, paid once
- UModel 2026 Professional Edition$349, paid once
- UModel 2026 Enterprise Edition$429, paid once
In their own words
Altova UModel
Altova UModel has no write-up on Specifiction yet; its figures are above.
UMLet
UMLet is a free, open-source tool for quickly sketching UML diagrams, including class, use case, sequence, state, deployment, and activity diagrams. Users edit diagram elements by changing text in a small markup dialect rather than configuring pop-up dialogs. UMLet is available as a stand-alone desktop application, an Eclipse plugin, the browser app UMLetino, and a Visual Studio Code extension. The desktop application exports to BMP, EPS, GIF, JPG, PDF, PNG, and SVG, can copy diagrams to the clipboard, and supports command-line batch conversion of UXF files. UMLetino runs in a browser without installation, stores diagrams in browser storage, and exports PNG. Custom elements can be made with Java code that UMLet compiles on the fly, but only in the stand-alone version. The desktop application requires Java and runs on Java platforms such as Windows, Linux, and macOS. UMLet identifies its license as GNU GPL 3.0. It does not generate code from models or reverse-generate models from code; round-trip engineering is not planned.