LibreOffice

Free, fully offline office suite that never touches the cloud.

libreoffice.org
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Price
FreeCompletely free and open source with no paid tiers; donations to The Document Foundation are optional.
Works on
Windows, macOS, Linux
Based in
Germany
Source code
Open source

LibreOffice is the mature, fully offline alternative to Microsoft Office, bundling a word processor, spreadsheet, presentation, drawing and database app in one download. Because it runs entirely on your own machine, nothing you type is sent to a vendor's cloud to be indexed or profiled. It opens and saves Microsoft formats, though very complex .docx and .xlsx layouts can still shift a little. It is free, open source and stewarded by the non-profit Document Foundation. Choose it if you want a private desktop suite with no accounts and no subscriptions.

Strengths

  • Runs fully offline, no cloud or account
  • Complete suite: documents, sheets, slides and more
  • Free and open source under non-profit stewardship
  • Can password-encrypt saved files locally

Considerations

  • No built-in real-time collaboration
  • Microsoft format fidelity is not perfect
Listed inOffice Tools

LibreOffice alternatives

CryptPadEnd-to-end encrypted office suite you use in the browser.ONLYOFFICESelf-hostable suite with the best Microsoft format compatibility.Collabora OnlineSelf-hosted, browser-based office suite built on LibreOffice.EtherpadSelf-hosted real-time editor for collaborative writing.