I used to use it a bit to draw graphs, but I've since come across mermaid[0] and it's even better for this task. It doesn't have the kind of flexibility a mouse based tool like excalidraw has but it's faster and easier to use for me.
I am using PlantUML instead and C4 some time ago. Works very well inside VSCode, but Mermaid was quick.
Long live `dot`!
I think I finally settled on mermaid cause it fits flawlessly into markdown based writing or documenting software. I don't think it's anywhere close to dot in it's comprehensiveness though.
Mermaid looks far more modern.