Staruml License Open Source Or Proprietary Jun 2026

StarUML does not use a single open-source license (like MIT, Apache, or GPL). Instead, it utilizes a proprietary End-User License Agreement (EULA).

Although the core StarUML application is proprietary, many of its extensions (such as those for Java or C# code generation) are hosted on GitHub under permissive open-source licenses like MIT . Why the Change? StarUML - Open Source UML Tool - Methods & Tools staruml license open source or proprietary

Would you like a printable decision flowchart or a sample table comparing open-source vs. proprietary StarUML features? StarUML does not use a single open-source license

This is the area that causes the most confusion. Why the Change

Licenses are available for individual modelers or organizations, with specific site licenses for larger teams. Open Source Legacy and Forks

Organizations utilizing StarUML without paying for licenses are liable for software piracy audits. The visibility of the source code does not equate to permission to use the software for free.