CNET

This Is My Favorite Microsoft 365 Replacement and It’s Free on Linux, Mac and Windows

In addition to being free and open-source, LibreOffice offers other benefits, such as greater document privacy than Microsoft ...
Windows Report

LibreOffice Comes to the Rescue as Microsoft Publisher Support Ends

Microsoft Publisher support has ended, but LibreOffice offers a free alternative to open, edit, and manage PUB files.

I tried the free Microsoft Word clone on Linux – and it’s my new default (on Mac too)

Someone cloned Microsoft Word, so I had to try it on Linux and Mac. It’s a 1:1 alternative - and open source.
XDA Developers

As Microsoft kills off Publisher, LibreOffice steps in with free support for your PUB files

LibreOffice welcomes Publisher refugees after Microsoft drops Publisher from Office 365. They reverse-engineered the PUB file ...