The files module supports:
The Group-Office Assistant is a small program that you can install on your Windows, MacOS or Linux computer. It will automatically download files opened from Group-Office and monitor it for changes. When the file is saved it automatically uploads it back to Group-Office.
It also assists in mounting a network drive.
Download it for:
With LibreOffice Online you can edit office documents in your browser. You need a working LibreOffice Online server. More info on https://www.libreoffice.org/download/libreoffice-online/
For installations read the LibreOffice online installation page.