01Microsoft Excel → GridCraft
Best Free Open-Source Microsoft Excel Alternative (2026): Meet GridCraft
120 FPS spreadsheet for .XLSX, .CSV & .Parquet with 400+ Excel formulas and pivot tables.
GridCraft v0.10.0 — Authentic Native Capture
Runs 100% on your device via WebAssembly — zero files uploaded to any server.71 MB RUST · 105 MB RAM
02Why Creators Switch
Free Microsoft Excel Alternative
Stop paying $99/year for Microsoft Excel. GridCraft v0.10.0 is a clean-room native Rust replacement for Windows 10/11 and Browser WebAssembly that opens .xlsx, .xls, .csv, .tsv, .ods, .parquet locally with zero accounts or cloud lock-in.
- ▪ PowerQuery M-scripts and legacy COM/VBA add-ins are not supported
- ▪ 3D Maps plugins are excluded to keep the binary lightweight
GridCraft v0.10.0 (73%)
- +Multi-threaded Rust formula engine supporting 400+ Excel functions (XLOOKUP, INDEX/MATCH, dynamic arrays)
- +Scrolls 1,000,000+ rows at 120 FPS without freezing — opens massive .csv & .parquet files
- +Pivot tables, conditional formatting, sparklines, and publication-grade charts
- +Full .xlsx round-trip compatibility without Microsoft 365 licensing nag screens
- +Direct SQL & AI agent MCP query interface over open workbooks
03Frequently Asked Questions
Can I use ArteCraft apps commercially at work or for client projects?
Yes. Dual MIT / Apache-2.0 open-source licensing grants unrestricted commercial use in studios, agencies, universities, and businesses.
Does ArteCraft.exe require Windows Administrator rights or install background services?
No. ArteCraft.exe (7.4 MB) runs portably in user space (%LOCALAPPDATA%\ArteCraft\Apps or your custom folder) with zero background telemetry.
OPEN FORMATS WITHOUT Microsoft Excel:.XLSX / .CSV / .PARQUET →