Your private, free office suite

LibreOffice is a private, free and open source office suite – the successor project to OpenOffice.
It's compatible with Microsoft Office/365 files (.doc, .docx, .xls, .xlsx, .ppt, .pptx) and is backed by a non-profit organisation.

Out now: LibreOffice 26.2

Markdown support • Connectors in Calc • Spreadsheet speedups

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LibreOffice is about more than software. It’s about people, culture, creation, sharing and collaboration.

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LibreOffice is Free and Open Source Software. Development is open to new talent and new ideas, and our software is tested and used daily by a large and devoted user community.

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The 14th Anniversary of Our Foundation

17 February 2026 marks the 14th anniversary of The Document Foundation’s recognition as a non-profit organisation under German law. The foundation is focused on developing free and open-source software for individual productivity. This focus has guided the development of LibreOffice and the software tools for liberating proprietary formats released by

read more »

Why ODF and not OOXML

Many interpreted the last article in this series as an attack on Microsoft for using the OOXML format against users’ interests. However, this was only one of my objectives, as I also wanted to raise users’ awareness of fake open-source software, such as OnlyOffice, which partners with Microsoft in a

read more »

The 14th Anniversary of Our Foundation

17 February 2026 marks the 14th anniversary of The Document Foundation’s recognition as a non-profit organisation under German law. The foundation is focused on developing free and open-source software for individual productivity. This focus has guided the development of LibreOffice and the software tools for liberating proprietary formats released by

read more »

Why ODF and not OOXML

Many interpreted the last article in this series as an attack on Microsoft for using the OOXML format against users’ interests. However, this was only one of my objectives, as I also wanted to raise users’ awareness of fake open-source software, such as OnlyOffice, which partners with Microsoft in a

read more »