Spreadsheets run budgets, forecasts, payroll and board packs — and they are the only programming environment with no tests, no linter and no code review.
Drop a workbook below. Plumb runs 14 checks over it, works out what each problem is actually costing, and shows you only what it can prove. It stays quiet about everything else.
No spreadsheet to hand? Try or .
Your spreadsheet never leaves this computer. There is no server — Plumb runs entirely inside your browser. You could switch off your internet after this page loads and it would still work.