ZeninData

ZeninData independently hosts GridCraft v0.7.0, an open-source spreadsheet editor developed by the ArtCraft team and contributors. It offers a free, no-account browser workflow to open local XLSX or CSV files, manually edit cells, use formulas and charts, and download an XLSX workbook or export the active sheet as CSV. We maintain the hosting and English guides, not the upstream engine.

Files are processed in the browser. This is alpha software: keep original files and check the downloaded result, especially complex Excel workbooks. VBA macros are not supported. The planned natural-language AI agent is not integrated or available.

Useful for inspecting a small CSV export or trying a simple spreadsheet workflow. Practical guides cover opening XLSX files, converting CSV to XLSX, and compatibility limits. This submission was prepared with AI assistance and checked against the current hosted product.