CSV / Excel Comparison

Inline cell editing: Click a cell to edit its content
Undo/Redo: Cmd+Z / Cmd+Shift+Z for cell edit operations
Save: Cmd+S saves as CSV, with Save As dialog for new documents
Rescan: F5 recomputes the diff from edited cells

CSV / TSV Comparison

WinXMerge provides a dedicated table view for comparing .csv and .tsv files.

Cell-level diff: Each cell is compared individually, with changed cells highlighted
Auto-delimiter detection: Automatically detects comma (CSV) or tab (TSV) delimiters independently per file
Quoted fields: Handles quoted fields with embedded delimiters and newlines
Column resizing: Drag column header borders to resize
Delimiter mismatch warning: Alerts when comparing .csv vs .tsv files

Create a blank table comparison via File → New → Table (10x5 initial grid).

WinXMerge can compare Excel and spreadsheet files with a table-view cell diff display.