
LibreOffice
Free, fully offline office suite that never touches the cloud.
Cloud office suites like Google Docs and Microsoft 365 read, index and profile everything you write, from private letters to financial plans and increasingly feed it to AI models. A privacy-respecting office suite keeps your documents on your own machine or your own server, where no vendor can mine them. The trade-off is that you give up some of the frictionless convenience of a giant hosted service and you may take on setup or self-hosting yourself. For most people the gain in control is well worth it.
Start by deciding whether you need software that runs entirely on your own device or a collaborative service you reach in a browser. Fully local suites like LibreOffice keep everything offline with zero accounts, while browser suites add real-time co-editing at the cost of running a server or trusting a host. If you self-host, you keep control but take on maintenance; if you rely on a hosted instance, check where it is based and whether it is end-to-end encrypted. Finally, weigh format compatibility: if you swap files with Microsoft Office users, pick a suite that handles .docx and .xlsx cleanly.
Here are some things to look for.

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

End-to-end encrypted office suite you use in the browser.

Self-hostable suite with the best Microsoft format compatibility.

Self-hosted, browser-based office suite built on LibreOffice.




Sovereign collaborative document editor
