LibreOffice is the best free office suite ever, and is available thanks to the combined effort of a large global community, which is also providing professional and volunteer

LibreOffice Calc allows to show quite easily the top 10
LibreOffice allows to select the language to check the spelling of a document – or a paragraph – by clicking on the language area of the status bar. The action opens a menu
LibreOffice allows to save different versions of the same document in the ODF file. The feature can be accessed with the menu File > Versions…, which opens the dialog windows on the left.
The different options on this
Berlin, December 17, 2015 – The Document Foundation announces LibreOffice 5.0.4, the fourth release of the LibreOffice 5.0 family, with a large number of fixes over the previous releases. So