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SheetAtlas is a free, cross-platform tool for searching and comparing multiple Excel files as a unified database. 100% offline — your data never leaves your computer.
KEY FEATURES
Unified Search
Load unlimited files (.xlsx, .xls, .csv) and search across all sheets with regex support.
Row Comparison
Compare rows from different files with intelligent column mapping and visual diff highlighting.
Data Export
Export to Excel or CSV with column filtering, semantic names, data regions support and preserved formatting.
Template Validation
Create templates, batch validate files, detect type inconsistencies.
Data Normalization
Automatically correct cell types based on dominant column data — dates stored as numbers, mismatched formats fixed in-place.
Customization
Light/Dark/System theme, configurable defaults, custom output folder.
PLATFORMS
Windows, Linux, macOS — native installers available
Features
- Reads .xlsx (Excel 2007+), .xls (Excel 97-2003), .csv (Text)
- Search data across multiple files
- Side-by-side row comparison with color-coded differences
- Automatic column alignment during comparisons
- Templates management
- Column linking, grouping, filtering
- Customizable Settings
- Data Regions for improved data type recognition
Project Samples
