LibreOffice
The free Microsoft Office replacement
Office & ProductivityMPL-2.0Windows · macOS · LinuxPopular
About LibreOffice
LibreOffice is the most popular open-source office suite in the world, with Writer (documents), Calc (spreadsheets), Impress (presentations), Draw, Base and Math built in. It opens and saves Microsoft Office formats with high fidelity and is maintained by The Document Foundation.
LibreOffice is completely free and open source (MPL-2.0) — no trials, no subscriptions, no locked features. Always download from the official website to avoid bundled malware.
Free alternative to: Microsoft 365 / Word & Excel
Pro options: None — LibreOffice is 100% free, funded by donations. Paid cloud suites (Microsoft 365, Google Workspace) are optional, never required.
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