No. StarUML runs in "trial mode" without a key. However, trial versions include a watermark and disable high-resolution exports.
Access hundreds of user-contributed and official extensions to add support for SysML, ERD (Entity-Relationship Diagrams), C#, Python, Java, and PHP code generation.
All prices are per device and exclude VAT where applicable . License Key Staruml
StarUML offers a wide range of features and benefits, including:
If the cost of a StarUML license is a barrier, there are numerous legitimate and high-quality free alternatives: However, since Version 2, it has evolved into
Historically, StarUML originated as an open-source project (Version 1). However, since Version 2, it has evolved into a commercial product to fund regular feature rollouts, bug fixes, and long-term tech support. 2. Evaluation Mode vs. Fully Licensed Pro Version
If the software crashes or corrupts your project files, StarUML’s developer support will not assist you unless you can provide a valid, verified purchase receipt and license key. How to Properly Purchase and Activate StarUML Azure) | ✗ | ✓ |
While searching for a free "License Key StarUML" online might seem like a quick fix, the associated security risks, malware threats, and lack of software updates make it a dangerous path. If you love StarUML’s fast, agile modeling interface, purchasing a personal or commercial license directly rewards the creators and guarantees a secure, stable workflow. If a paid tool is out of reach, opting for robust, free open-source alternatives like Modelio or PlantUML will keep your system secure and your development legally compliant.
StarUML is not open-source software; it is with a free evaluation period. After 30 days, you cannot save diagrams or export images without a valid license. The developers (MKLab) use a per-user licensing model—meaning one license covers one user across multiple machines (Windows, Mac, Linux).
18;write_to_target_document7;default0;a1;0;a1;18;write_to_target_document1b;_WQ7uaZiKNa_RwcsPy-6r8Q0_100;a49;0;5ea; 0;11c5;0;214d; Help Center - StarUML
| Feature Category | Standard | Professional | | :--- | :---: | :---: | | | $129.00 | $199.00 | | Volume Discount | $119 for 10+ devices | $189 for 10+ devices | | Core UML 2.x | ✓ | ✓ | | Entity-Relationship Diagram | ✓ | ✓ | | Flowchart, DFD, Mindmap, C4 Model | ✓ | ✓ | | Mermaid Support | ✓ | ✓ | | SysML | ✗ | ✓ | | BPMN | ✗ | ✓ | | UI Wireframe | ✗ | ✓ | | Cloud Architectures (AWS, GCP, Azure) | ✗ | ✓ |