You mean OpenOffice? Because it's not quite the same thing. It can cause some differences in appearance for docx (though that doesn't mean much, since M$FT Word also doesn't display their own doc format consistently either).

No, OpenOffice is the Apache project that shares ancestry with LibreOffice.

I’m talking about the Microsoft product that is now sold under the Microsoft 365 Online brand.

It isn’t a perfect replacement but for the times I’ve used it, it’s been pretty good.

You lost me at “web”. Local-first is so much nicer for my workflow—and I am sure this holds for most other people.

The person I responded to uses Google Docs.

Key word, sometimes:

Closest thing that I use is Google docs, sometimes.... The reason I use vim for everything now is - I use vim for everything.

<https://news.ycombinator.com/item?id=39230525>

Do you mean a Word from Office360?

From my experience Word from Office360 breaks complex formatting of desktop Word document even worse, than LibreOffice/Google Docs does.