GridCraft — Open-Source Spreadsheet (Free, Rust, Excel-Style)
Who this is for: Analysts, accountants and spreadsheet workers who want Excel-style work free — and want their data pipelines scriptable.
Open-source spreadsheet in pure Rust — a clean-room Excel reimplementation, free, scriptable, agent-native.
Quick answer: GridCraft is a free, open-source spreadsheet — a clean-room Excel reimplementation in pure Rust, part of the ArtCraft family. Formulas, tables and scriptable automation via CLI/JSON/MCP, native on macOS/Windows/Linux plus browser. Alpha with documented gaps.
Official source — GridCraft
getartcraft.com → the app's page → Download for desktop (Windows build)
- Download the Windows build from getartcraft.com (official source only).
- Run the installer or unzip the package — it is a native Rust binary, no runtime required.
- Open the app, create a document or open a real file (e.g. .psd in PhotoCraft, .svg in VectorCraft).
- No account, no signup, no subscription — the family has none.
GPU compositing runs through wgpu (DX12/Vulkan). A GPU with a supported driver helps; it is not mandatory.
Based on the project's stated rendering stack (wgpu: Metal/Vulkan/DX12/WebGPU; WASM browser builds). The project publishes no hard minimum specs.
| Replaces | Microsoft Excel workflow |
|---|---|
| License | Open source |
| Status | Alpha |
| Platforms | macOS · Windows · Linux · Web |
| Price | Free, no subscription |
The spreadsheet, rebuilt clean
GridCraft is an open-source spreadsheet — a clean-room reimplementation of the Excel workflow rebuilt in pure Rust. It is the spreadsheet member of the ArtCraft family: cells, formulas, tables and data work without a Microsoft 365 subscription.
Like its siblings it runs natively on macOS, Windows and Linux plus a WebAssembly browser build, and exposes a CLI, JSON control channel and MCP server. Family-native formats keep spreadsheets open and diffable — a data file you can review in Git, not a binary mystery.
Key facts at a glance
- Clean-room reimplementation of the Excel workflow in pure Rust
- Cells, formulas and tables with open, diffable family-native formats
- Native macOS, Windows and Linux plus WebAssembly browser build
- Agent-native: CLI, JSON control channel and MCP server
- Free, no subscription
Quick start — first five minutes
- Download GridCraft from getartcraft.com (macOS, Windows, Linux) or use the browser build — free, no subscription.
- Create a workbook and enter data with formulas and tables in the familiar grid.
- Open family-native spreadsheet files and keep working — formats stay open and diffable.
- Script data jobs (imports, recalculations, exports) via CLI/JSON/MCP.
- Share workbooks as reviewable, versionable files.
Common uses
- Build spreadsheets without a Microsoft 365 subscription
- Keep data workbooks in Git with diffable formats
- Automate data pipelines from scripts or AI agents
- Learn Excel-style spreadsheet work free
Data files you can diff
The family's open format means a spreadsheet is a reviewable artifact: formula changes, row additions and price updates appear as diffs in version control. For teams that treat data as code, that is the difference that matters most.
Pipelines, not just cells
CLI, JSON control channel and MCP server let data jobs — import, transform, recalculate, export — run from scripts or agents. The grid stays the human review surface; the machine does the repetition.
Honest gaps
Alpha-stage. Full Excel parity — advanced functions depth, pivot-table ecosystem, macros, add-ins — is not claimed. Check project status before moving critical financial models.
Frequently Asked Questions
Is GridCraft free?
Can it open .xlsx files?
Can I automate spreadsheet work?
More guides for this app
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VectorCraft in ten minutes: Pen, Pathfinder, smart guides, and SVG/PDF/.ai import-export — the Illustrator workflow free.
EffectCraft in ten minutes: compositions, keyframes, 306 effects, expressions, 3D cameras and Lottie export — the AE workflow free.
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Open-source non-destructive photo editor in pure Rust — a free Lightroom-style workflow: edit without destroying the original, agent-native.