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LibreOffice is a powerful open source and free office suite, a successor to OpenOffice(.org), developed by The Document Foundation, which is a non-profit organization that promotes open-source document handling software. Used by million of users all around the world, LibreOffice supports the Open Document Format for Office Applications (ODF), which is an open standard file format.



LibreOffice is available in CMF


LibreOffice is available in the Mac Self-Service


LibreOffice is available in the LibreOffice web page

Online (work in progress)

Collabora Online, which is based on LibreOffice, is now available on CERNBox. You can create and modify ODF documents using your preferred web browser without a need to install any applications on your computer. This is the recommended way of using it due to possibility to collaborate with other users in real time.

Warning: users working on the same document (via CERNBox or shared networked storage) should use the same application to edit the document, otherwise the document can be corrupted. See this KB for more details.


  • Text, presentations and spreadsheet editors
  • Desktop application
  • Online application via CERNBox
  • Large and powerful set of features
  • Compatibility with Open Document formats (odt, odp and ods)
  • Realtime collaboration experience with multiple users

Microsoft interoperability

LibreOffice is able to open Microsoft formats such as as docx, pptx and xlsx, however there may be a partial loss of the format in some cases. If you need to work with MS formats, consider using OnlyOffice instead.


LibreOffice counts with extended online documentation that can be found in their website.


Training sessions are now available. For more information, please check the CERN Learning Hub

User support

To report any incidents or requests, please open a SNOW ticket