OntoUML plugin for Visual Paradigm
You can install this plugin by either:
~/.config/VisualParadigm/plugins/
in LinuxC:\Users\<YOUR_USER_NAME>\AppData\Roaming\VisualParadigm\plugins\
in Windows~/Library/Application Support/VisualParadigm/plugins/
in macOSIt is recommended to create a new project (name it anything but "untitled") so all OntoUML's stereotypes are created in the scope of the project. If you don't want to create a new project, the plugin has a button to add all stereotypes to the project.
Create a new class diagram. Set the stereotype in a class, all OntoUML's stereotypes will be in the list. Same thing for associations. The plugin's actions are in the Plugin tab.
For meronymic associations, you may want to change their tagged values. To show them, right-click in the background of the class diagram area, go to Presentation Options, then to Show Tagged Values.