Restart StarUML. You should see "Licensed to [Your Name]" in the About section.
StarUML is a free, open-source modeling tool that supports UML 2.4. It offers a wide range of features, including: License Key Staruml
According to the official StarUML Pricing Page , there are two primary tiers available for a one-time payment: License Tier Price (per device) Key Features Included $129.00 UML 2, ERD, Flowcharts, Mindmaps, C4 Model, Mermaid support Professional $199.00 Restart StarUML