Yeah, Excalidraw is really nice diagramming tools that I frequently used as well on my day-to-day works.

For the self-host, finally I build the solution myself so I can self-host Excalidraw and several other plaintext diagramming format while still able to working with my peers using realtime collaboration.

I open sourced it on https://github.com/andes90/collabmd, and if you want to try you can play around with the demo on https://demo.collabmd.app

The company where I'm contracted retired Excalidraw in favor of Lucid and, while I understand that big companies are going to go with big, enterprise-y solutions, what went from a weekly "sketch something out to help with communicating my ideas" turned into "once every few months I begrudgingly document something".

Excalidraw is excellent for low-friction sketches.

I was surprised about that, too. Tried a bit but found very few sources online.

A self-hosted version with storage (multiplayer) plus any Claude access would be a killer setup for team planning etc and let us drop Miro.

My favorite aspect of it is the keyboard shortcuts. It makes things so much faster.