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LibreOffice Calc vs Modern CSV: catalog facts
LibreOffice Calc	Modern CSV
Free Free and open source, developed by The Document Foundation and community contributors.	Freemium Can be downloaded and used for free, with paid features available.
Windows, macOS, Linux	Windows, macOS, Linux
Free with no account or subscription Data analysis, formulas and charts	Opens large files that are slow in spreadsheet programs Commands operate on many rows, columns or cells at once
Installed with the whole LibreOffice suite rather than on its own No built-in real-time co-editing like online spreadsheets	Closed source Focused on delimited text files rather than full spreadsheet work
Downloadable app	Downloadable app
Open source	Closed source
License: MPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.