LibreOffice is a free and open-source office productivity software suite developed by The Document Foundation (TDF). It was created in 2010 as a fork of OpenOffice.org, itself a successor to StarOffice. The suite includes applications for word processing (Writer), spreadsheets (Calc), presentations (Impress), vector graphics (Draw), database management (Base), and formula editing (Math). It supports the OpenDocument format and is compatible with other major formats, including those used by Microsoft Office.
LibreOffice is available for Windows, macOS, and is the default office suite in many Linux distributions, and there are community builds for other platforms. Ecosystem partner Collabora uses LibreOffice as upstream code to provide an online solution branded as Collabora Online, and apps for Android, iOS, iPadOS, and ChromeOS operating systems which are branded as Collabora Office.
TDF describes LibreOffice as intended for individual users, and encourages enterprises to obtain the software and technical support services from ecosystem partners like Collabora. TDF states that most development is carried out by these commercial partners in the course of supporting enterprise customers. This arrangement has contributed to a significantly higher level of development activity compared to Apache OpenOffice, another fork of OpenOffice.org, which has struggled since 2015 to attract and retain enough contributors to sustain active development and to provide timely security updates.
LibreOffice was announced on 28 September 2010, with its first stable release in January 2011. It recorded about 7.5 million downloads in its first year, and more than 120 million by 2015, excluding those bundled with Linux distributions. As of 2021, TDF estimated around 200 million active users. The suite is available in 120 languages.