GlassCSV
Lightweight & Fast CSV Editor
Only for Mac
Free · In‑App Purchases
Mac
GlassCSV is a lightweight, Mac-native CSV editor.
Data remains unchanged.
GlassCSV does not automatically convert data. Leading zeros remain as "001," and dates like "1/2" remain as "1/2."
Formulas like "=SUM()" are also preserved as plain text. Even after saving and reopening, all cells are completely identical down to the byte.
Free Features
• Open and edit CSV, TSV, and SSV files
• Sort and filter columns
• Find and replace (Cmd+F)
• Add, delete, and sort rows and columns
• Change encoding (UTF-8, Shift-JIS, EUC-JP, etc.)
• Select line break code (CRLF / LF / CR)
• Statistics for selected range (count, total, average)
• Undo/Redo
• Zoom (50-200%)
Pro Features (One-time purchase)
• CSV diff view – highlights changes in each cell
• Detect and remove duplicate rows
• Find and replace using regular expressions
• Copy in JSON/Markdown/SQL format
Privacy First
All processing is done locally. Your data is never sent from your Mac to external locations.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Minor changes to the About screen.
The developer, Yuichi Okuno, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yuichi Okuno
- Size
- 4.5 MB
- Category
- Productivity
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- GlassCSV Pro $9.99
- Copyright
- © 2026 Yuichi Okuno