: Run the staruml-5.0-with-cm.exe installer. This version is licensed under the GPL, meaning it is free to use forever. Official Pricing for Full Features
If you need a version that is entirely free for any purpose without watermarks or trial limitations, you can use the original open-source version (StarUML V1). Note that this version is no longer maintained and lacks the modern features of V5. StarUML 5.0.0 (x86-x64) Activator Free Download
: Visit the official StarUML download page and select the Windows (x86) installer. : Run the staruml-5