GridCraft

What is GridCraft?

GridCraft is an open-source, high-performance spreadsheet software rebuilt in pure Rust by the ArtCraft team as a clean-room alternative to Microsoft Excel. Replicating the classic spreadsheet grid and ribbon interface, GridCraft gives power users, analysts, and developers a lightning-fast, zero-cloud desktop application that natively reads and writes XLSX workbooks.

In an era where spreadsheet data is increasingly locked into proprietary cloud subscriptions and subject to privacy concerns, GridCraft keeps your financial models, corporate data, and formulas 100% local. It implements 513 of Excel's 523 worksheet functions — including modern dynamic arrays, structured table formulas, and advanced functional programming primitives like LET and LAMBDA.

GridCraft pairs seamlessly with WordCraft and PhotoCraft, forming an agent-addressable local office and creative workspace.

Key Features

• 513 Excel Worksheet Functions — Near-total function parity covering mathematical, statistical, financial, lookup, and text operations with exact IEEE-754 calculation parity.
• Modern Dynamic Arrays & Formulas — Full support for spill ranges, XLOOKUP, FILTER, SORT, UNIQUE, alongside lambda functions (LET, LAMBDA).
• Native XLSX Compatibility — Opens and saves standard .xlsx workbooks with cell formatting, merged ranges, conditional formatting, and multi-sheet references.
• Interactive Charts & Sparklines — Embed live column, line, bar, and area charts directly inside sheets with GPU-rendered smooth zooming.
• Agent Automation via MCP (gridcraft-mcp) — Exposes granular cell range reads/writes, formula evaluation, and batch table population over the Model Context Protocol (MCP) for autonomous data analysis agents.
• Zero Telemetry & Local Execution — No accounts, no license verification servers, and no background tracking. Your data never leaves your device.

How to Download GridCraft (GitHub & Release Builds)

GridCraft is licensed under MIT / Apache-2.0:

• Download & Releases: getartcraft.com/apps/gridcraft
• GitHub Repository: github.com/storytold/gridcraft
• Office & Creative Suite Guide: Learn how GridCraft integrates with other tools in the ArtCraft Open-Source Guide.

Frequently Searched Questions

• Is GridCraft compatible with Microsoft Excel? Yes, GridCraft uses .xlsx as its native file format, allowing seamless bidirectional sharing of spreadsheets without conversion loss on standard tables and formulas.
• Does GridCraft support macros? GridCraft prioritizes modern dynamic array functions and native Rust / Python / MCP automation over legacy VBA macros.