You can use StarUML for free for 30 days . During this time, all features are available, but exported diagram images will contain watermarks.
StarUML is a premier software modeling tool used for creating professional UML, SysML, and BPMN diagrams. While it offers a free trial, purchasing a or Commercial license unlocks critical features such as high-resolution exports (PNG/JPEG), watermark-free PDFs, and unrestricted usage time. Why You Need a StarUML License Key License Key Staruml
Click "Activate." The software will phone home to the MKLabs server. You can use StarUML for free for 30 days
for students and teachers. By providing proof of enrollment, academic users can obtain a legitimate license key at a significantly reduced rate, allowing them to produce professional, watermark-free diagrams for coursework and research. all features are available