The engine is built in rust, and can be packaged for web via WASM with typescript GUI.
We have found the API surface to be extremely useful for programming agents or SDKs like Claude Code codex etc...
With HTML being the future, xslx embedding is the way to go.
Can you speak about how you are different from Univer [1] please?
Link 1: https://github.com/dream-num/univer