TinyCSV

A native macOS CSV and TSV viewer. See your data as a sortable table — click any cell to jump to it in the source.

• Three-panel layout — file sidebar, editor, and table preview
• Syntax highlighting — commas, quotes, and field structure
• Live preview — spreadsheet-style table rendered as you type
• Directory browsing — navigate folders, subdirectories, and files
• Quick open — fuzzy file finder (Cmd+P)
• Auto-save — saves as you type with dirty-file indicators
• Find & replace — native macOS find bar (Cmd+F)
• Tab support — multiple files in tabs
• Line numbers — optional gutter with current line highlight
• Word wrap — toggle with Opt+Z
• Font size control — Cmd+/Cmd- to adjust, Cmd+0 to reset
• Light & dark mode — follows system appearance
• Status bar — row count, column count, file size
• Open from Finder — double-click .csv or .tsv files to open in TinyCSV
• On-device AI — Cmd+K to ask questions about your data (CoreML, fully offline)

• macOS 26.0+
• Xcode 26+ (to build)

xcodegen generate --spec project.yml

xcodebuild clean build \
  -project TinyCSV.xcodeproj \
  -scheme TinyCSV \
  -configuration Release \
  -derivedDataPath /tmp/tinybuild/tinycsv \
  CODE_SIGN_IDENTITY="-"

rm -rf /Applications/TinyCSV.app
cp -R /tmp/tinybuild/tinycsv/Build/Products/Release/TinyCSV.app /Applications/
xattr -cr /Applications/TinyCSV.app

Built with SwiftUI, NSTextView, and TinyKit.

Native macOS micro-tools that each do one thing well.

MIT