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Re:Ask HN: Favorite UML Modeling Tool? by softmodeling on Saturday February 05, 2022 @07:33AM (#30220411)
Are you looking for a textual UML tool (https://modeling-languages.com/text-uml-tools-complete-list/) to "write" your UML models and then easily render them in your browser?

Or for a graphical online UML editor (https://modeling-languages.com/web-based-modeling-tools-uml-...)?

If the former, then plantUML is my favourite. If the latter, there quite a few options but one that's easy and fast is http://www.umletino.com/

Re:Ask HN: Favorite UML Modeling Tool? by tluyben2 on Saturday February 05, 2022 @08:33AM (#30220811)
> textual UML tool (https://modeling-languages.com/text-uml-tools-complete-list/)

Mermaid is in the comments, not the main list, but I have been using it for a while now for our specs; it can be rendered to whatever image, but also on the client side which is great for embedding in 'living documents'.