[6][7] After forking from OpenOffice.org in 2010, LibreOffice Calc underwent a massive re-work of external reference handling to fix many defects in formula calculations involving external references, and to boost data caching performance, especially when referencing large data ranges.

[8] Calc is capable of opening and saving most spreadsheets in Microsoft Excel file format.

[6] As with the entire LibreOffice suite, Calc is available for a variety of platforms, including Linux, macOS, Microsoft Windows,[3] and FreeBSD.

[4] Available under the Mozilla Public License, Calc is free and open-source software.

Ecosystem partner Collabora uses LibreOffice upstream code and provides apps for Android, iOS, iPadOS and ChromeOS.