Download StarUMLv6.2.2 x86_64

StarUML for Windows

StarUML for Ubuntu

StarUML for Fedora

Quick activation on Linux

    git clone https://github.com/dhoaibao/Activate-StarUML-License.git
    sudo mv Activate-StarUML-License/app.asar /opt/StarUML/resources
    rm -rf Activate-StarUML-License/

Manual activation on Windows

1. Download app.asar file at here.
2. Replace app.asar file in the folder: C:\Program Files\StarUML\resources\

Check app.asar file if necessary:

1. Install Node.js and npm
2. Install asar via npm: npm i asar -g
3. Extract source: asar extract app.asar app
4. Check at app folder
5. Repackage app: asar pack app app.asar

Source: https://blog.csdn.net/mtrdong/article/details/133831497