Show HN: GUI for editing Mermaid class diagrams 2 years ago
We make (and sell) one, you can play with it here: https://play.d2lang.com/?script=qlDQtVOo5AIEAAD__w%3D%3D&lay...
Bigger example: https://play.d2lang.com/?script=rJLfavMwDMXv_RR6gYbvo3ce7FWG...
(I don't like to self promo on competitor posts, but since Mermaid doesn't compete in making its own layout engine I felt sharing this under this thread is relevant to HN. If anyone from Mermaid finds it in poor taste just let me know and I'll delete)