From The Document Foundation Wiki
Which platforms can you run LibreOffice on?
LibreOffice is available for all major operating systems, including
- Microsoft Windows 7 SP1 or above (32 and 64-bit)
- macOS 10.9 or above (official builds),
- GNU/Linux (Debian, Ubuntu, Fedora, Suse, ...) (32 and 64-bit)
Community ports for
- NetBSD and
- macOS 10.5 PowerPC (PPC)
are maintained by contributors to those projects, respectively.