GridCraft
Spreadsheets & analysisFast, native spreadsheets, rebuilt in pure Rust.
About GridCraft
Ribbon tabs, formula bar, 500+ calculation functions, dynamic arrays, PivotTables and charts in a native spreadsheet app that reads and writes .xlsx files.
Key Features
Formula bar, Name Box, sheet tabs, fill handle, colored cell references, conditional formatting, and familiar shortcuts.
Styles, themes, formulas, dynamic arrays, tables, validation, comments, sparklines and PivotTables round-trip cleanly.
Full dependency-graph calculation engine with dynamic arrays, spilling, LET, LAMBDA, MAP, REDUCE, and table references.
Seventeen chart types with customizable formatting, plus PivotTables with filters, field lists, layouts, and date grouping.
Every ribbon button, menu item, and formula can be driven by AI agents over an MCP server, CLI, or JSON control channel.
Your Files Stay on Your Device
Zero File Uploads
Total financial privacy: Your tables, formulas, and confidential data are never uploaded. All processing is computed in your browser using local device memory.
Saving & Exporting
Export your workbook anytime to XLSX or CSV with File → Export. Work buffers stay in browser localStorage and are exported directly to your computer.