StarUML is a top leading multi platform UML tool for software modelling.
Since then, it becomes a shareware.
you could still use it without paying anything, but you have to put up with the nag screens.
When you click a template, it will open in a new window.
StarUML comes with light and dark light themes that you could enable anytime through the preferences window.
Users are always recommended to use the latest version of any software, and that includes StarUML as well.
There is a search box at the upper area to help you look for the extension that you need.
They are annoying, but they will not hinder users that much in using the software.
However, you should buy the license if you like it and intend to use it frequently.
