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: You can use StarUML for free for an unlimited evaluation period . While in this mode, exported diagrams will include a watermark, but all modeling features are typically available for you to practice and design. Option 2: StarUML V1 (Open Source & Free)
The current version of StarUML (including v5.0.0 and newer) is proprietary software. You can download and use it legally without an activator by following these steps: StarUML 5.0.0 (x86-x64) Activator Free Download
: Visit the official StarUML download page and select the Windows (x86) installer. : You can use StarUML for free for
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 Note that this version is no longer maintained and lacks the modern features of V5. You can download and use it legally without