Started as an port to Mac, but by using the Mac-specific Aqua user interface, instead of the more widely used X11 windowing server, it aimed to be far more stable than the normal ports of other suites. The Document Foundation works with external organisations such as NeoOffice and Apache Foundation to help drive all three products forward.

Started as StarOffice in the late 1990s, it became OpenOffice under Sun and then LibreOffice in mid-2010. Go-oo had been the 'OpenOffice' used in Ubuntu and elsewhere. The Document Foundation was formed in mid-2010 by several large organisations such as Google, Red Hat, Canonical ( Ubuntu) and Novell along with the community (developed by Sun) and various forks, notably Go-oo.

LibreOffice Calc - developed for MS Windows, Linux, BSD and Apple Macintosh (Mac) operating systems by The Document Foundation.KSpread - following the fork of the Calligra Suite from KOffice in mid-2010, superseded by KCells in KOffice and Sheets in the Calligra Suite.Reasonably lightweight but has very advanced features. Started as the GNOME desktop spreadsheet. Collabora Online Calc - Enterprise-ready LibreOffice, included with Online, Mobile and Desktop apps.Tiki Wiki CMS Groupware includes a spreadsheet since 2004 and migrated to jQuery.sheet in 2010.Sheetster – 'Community Edition' is available under the Affero GPL.Collabora Online Calc - Enterprise-ready LibreOffice.

Main article: List of online spreadsheets

Best free spreadsheet software 123