Embeddable spreadsheet engine — parse, evaluate & mutate Excel workbooks from Rust, Python, or the browser. Arrow-powered, 320+ functions.

CalcDocs is your real‑time engineering sanity checker. It prevents subtle errors by showing you actual computed values — the ones you'd only catch after compiling — and keeps your formulas and C/C++ constants perfectly synchronized. It helps you keep formulas, documentation, and code always aligned — automatically.