The defence ministry of Italy does, as well as other Italian government bodies. https://www.zdnet.com/article/from-microsoft-to-libreoffice-how-italys-military

The defence ministry of Italy does, as well as other Italian government bodies. https://www.zdnet.com/article/from-microsoft-to-libreoffice-how-italys-military-is-starting-its-march-to-open-source/ https://www.zdnet.com/article/from-microsoft-to-libreoffice-... Well and my company does, but naturally biased as we're European (meaning, sending over lots of data to Microsoft is a bit more frowned upon) and produce open source software ourself.