LibreOffice (ˈliːbɹə) is a free and open-source office productivity software suite, a project of The Document Foundation (TDF). It was forked in 2010 from OpenOffice.org, an open-sourced version of the earlier StarOffice. The LibreOffice suite consists of programs for word processing, creating and editing of spreadsheets, slideshows, diagrams and drawings, working with databases, and composing mathematical formulas. It is available in 115 languages. TDF does not provide support for LibreOffice, but enterprise-focused editions are available from companies in the ecosystem.
LibreOffice uses the OpenDocument standard as its native file format, but supports formats of most other major office suites, including Microsoft Office, through a variety of import and export filters.
LibreOffice is available for a variety of computing platforms, with official support for Microsoft Windows, macOS and Linux and community builds for many other platforms. Ecosystem partner Collabora uses LibreOffice upstream code and provides apps for Android, iOS, iPadOS and ChromeOS. LibreOffice is the default office suite of most popular Linux distributions.
LibreOffice Online is an online office suite which includes the applications Writer, Calc and Impress and provides an upstream for projects such as commercial Collabora Online.
It is the most actively developed free and open-source office suite, with approximately 50 times the development activity of Apache OpenOffice, the other major descendant of OpenOffice.org, in 2015.
The project was announced and a beta released on 28 September 2010. In the nine months between January 2011 (the first stable release) and October 2011, LibreOffice was downloaded about 7.5 million times. In 2015, the project claimed 120 million unique downloading addresses from May 2011 to May 2015, excluding Linux distributions, with 55 million of those being from May 2014 to May 2015. The Document Foundation estimates that there are 200 million active LibreOffice users worldwide; approximately 25% are students and 10% are Linux users, who usually find LibreOffice part of their preferred distribution.