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I love Excalidraw, I use it all the time for work to quickly draw up a proposal for a customer. But its annoying I have to re-draw the same thing, but better in Draw.io / Visio when it comes to writing the formal documentation later.
Vellum is designed to give you the speed of a whiteboard, but the architecture-diagram-finish in quality.
It uses YAML to store everything, and even has a 'graph' section for those of you who like the diagram-as-code elements of mermaid... but vellum allows full authoring of layout without the restrictions of Mermaid.
I love it to bits. I hope you will too.
Been working on it a while, but decided to make it source available here: https://github.com/blueprintr-io/vellum-editor
Proud to say its not purely vibe coded slop, but I used Claude to help with some of the more challenging geometry based elements and some housekeeping stuff.
Discussion (4 Comments)Read Original on HackerNews
AI diagrams are handy for quickly understanding something, but, in my opinion, not good for real documentation, or for anything complex that has a lot of nodes (it gets messy quick).