Users and deployments

The Document Foundation estimated in September 2011 that there were 10 million users worldwide who had obtained LibreOffice via downloads or CD-ROMs. Over 90% of those were on Windows, with another 5% on Mac OS X. LibreOffice is the default office suite for most Linux distributions, and is installed when the operating system is installed or updated. Based on International Data Corporation reckonings for new or updated Linux installations in 2011, The Document Foundation estimated a subtotal of 15 million Linux users. This gave a total estimated user base of 25 million users in 2011. The Document Foundation has set a target of 200 million users worldwide before the end of 2020.

LibreOffice has seen various mass deployments since its inception:

In 2010 the Irish city of Limerick gradually started migrating to open-source solutions to free itself from vendor lock-in and improve its purchase negotiation power. One of the key aspects of this move has been the use of LibreOffice. In 2011 the administrative authority of the Île-de-France region (which includes the city of Paris) included LibreOffice in a USB flash drive given to students which contains free open source software. The USB flash drive is given to approximately 800,000 students. In 2011, it was announced that thirteen hospitals of the Copenhagen region would gradually switch to LibreOffice, affecting "almost all of the 25,000 workers". In 2012, the Greek city of Pylaia-Chortiatis migrated its PCs to use LibreOffice. The local Linux User Group estimated cost savings to be at least 70,000 euros. In July 2012, the Spanish city of Las Palmas switched its 1200 PCs to using LibreOffice, citing cost savings of €400,000. In 2012, the administration of Umbria, Italy, started a project to migrate an initial group of 5000 civil workers to LibreOffice. The U.S. city of Largo has been a long-time user of open-source software using Linux thin clients. Originally using OpenOffice.org, the city of Largo switched to LibreOffice in 2013. In June 2013 the government of the Italian province of South Tyrol will be switching 7000 PCs in administration and "many more thousands" PCs in health services using LibreOffice and ODF.