'What Tools are Used to Draw Software Documentation [closed]

I would like to draw diagrams like this one:

(taken from here.)

What tools are available to create such figures?

Solution 1:^[1]

I prefer Lucidchart. It is free up to a certain point, which is enough in most cases.

I think draw.io would work for what you'd like. They're open-source, free, easy to use and have great tutorials that can be found here.

Here's an example I found on their site that looks quite similar to what you're looking for, albeit slightly more minimal. As I can't yet embed images into posts this link will have to do.

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Solution	Source
Solution 1	Wheel Builder
Solution 2	Kal-Toh