If I understand correctly, LibreOffice is a fork/successor of OpenOffice. Here's a comparison on the LibreOffice website: https://www.libreoffice.org/discover/libreoffice-vs-openoffi.... It's a bit disingenuous though since it makes it seem OpenOffice hasn't had a release since 2014, even though last release was October 2021.
I found it quite accurate, not disingenuous at all. OpenOffice has been a maintenance-only project since 2014, they do release minor versions once in a while (like 4.1.11 in October 2021) with security fixes, some small bug fixes, plus whatever free-update they get from upstream libraries (e.g. updates to Unicode), but they don't have any plans to keep developing the software further, no new features. OpenOffice is a extraordinarily well maintained "legacy" software, and on that note, it is really cool that Apache stepped up to maintain it.
