D2 is fantastic. You can customise a lot of stuff in the diagrams with free layout engines. And it spits out SVGs which you can tweak with an editor (like Affin

D2 is fantastic. You can customise a lot of stuff in the diagrams with free layout engines. And it spits out SVGs which you can tweak with an editor (like Affinity Designer). I have a bunch of styles which I always dump in D2 to generate consistent looking diagrams. Might be useful if you have a design system and you want to give your diagrams branded look and feel. I also tried to figure out how to write a custom layout engine but apparently I need more weekends of time to work on it.