gridcraft

GridCraft is a free, open-source spreadsheet application from ArtCraft for flexible, transparent work with data. It combines an Excel-style ribbon, worksheet tabs, formula bar, formatting tools, charts, and PivotTables. Users can open, inspect, edit, and save XLSX files while keeping an original copy for safety. GridCraft runs in the browser and as a desktop application for Windows, macOS, and Linux. Its Rust and WebAssembly calculation engine supports more than 500 worksheet functions, including SUM, IF, dynamic arrays, LET, and LAMBDA. It is useful for household budgets, sales dashboards, grade trackers, small reports, and other practical spreadsheet projects. GridCraft is available at no cost under the MIT and Apache 2.0 licenses. As alpha software, it may have compatibility gaps with complex workbooks, specialist Excel functions, external data, and VBA macros, so important files should be backed up and checked after import or export.