LibreOfficeLibreOffice can open documents in many formats, but its native one is ODF (OpenDocument Format). At the recent LibreOffice Conference in Almeria, community members provided updates about ODF – and we've put videos of the presentations online: https://blog.documentfoundation.org/blog/2019/09/23/videos-from-libreoffice-conference-2019-opendocument-format/
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