Missing Ilograph: https://app.ilograph.com/

It's heavier-duty compared to most of the others you have listed, but should appeal to engineers who want something more robust.

It's much more sophisticated! It might be very powerful to have some wordsmith support in the authoring of the text, for example, in the org-mode of emacs, especially, the collapse (folding) of sub-trees.

This is amazing. Basically making architecture diagrams from yaml.

Meh, one more: https://structurizr.com/

One more to add: https://diagrams.mingrammer.com/

This needs to be installed and coded with a programming language. This list isn't about drawing with programming languages.

Is there a way to tell which are downloadable/usable offline/locally vs which are websites without clicking through each one?

I needed these tools for quick in-browser use so they are mostly online. Only few of them can be used offline.

I have some feedback. Would love to chat. My email is in profile.

Mine is profile name

BTW mine is only a list and I won't mind any feedback here in comments.

One main idea that would make your list 3x better: add a code snippet from each one.

This is a really good idea, thanks. Snippet won't be enough to cover the usages though. Most of these tools use varying syntax for different diagrams.

Anyone looking for a specific need can go through the links to find out which one is better.

Go through some of them. It's hard to summarize a tools function in a single snippet. Same goes for screenshots. How would you do that?

> Anyone looking for a specific need can go through the links to find out which one is better.

98% of people don't have time for that. If a snippet or tiny screenshot can't reveal some of the essence of the language it's probably not very good.