I would agree that "Calc" has worse usability if you're talking about OpenOffice. I find LibreOffice's Calc to be as usable as Excel because it reminds me of Ex

I would agree that "Calc" has worse usability if you're talking about OpenOffice. I find LibreOffice's Calc to be as usable as Excel because it reminds me of Excel 2003 (and older). Additional anecdata: I asked my wife who hates using Excel and she said that LibreOffice Calc was no different.