There are way worse choices to fall back on than LibreOffice. Heck, it's the primary tool I actually use in my business. I can tell you first hand that it does

There are way worse choices to fall back on than LibreOffice. Heck, it's the primary tool I actually use in my business. I can tell you first hand that it does not handle all the random stuff that corporate Excel users come up with, but if you start with basic principles the files usually work great in the other direction.