OpenOffice.org

OpenOffice.org is an open-source office productivity software suite. It originated from the proprietary StarOffice, developed by Star Division, which was acquired by Sun Microsystems in 1999. Sun open-sourced the software in July 2000 as a free alternative to Microsoft Office, and released OpenOffice.org version 1.0 on 1 May 2002. Following Sun's acquisition by Oracle Corporation, development of OpenOffice.org slowed and eventually ended. In 2011, Oracle donated the project to the Apache Software Foundation, which continues it as Apache OpenOffice,, with the most-recent version being 4.1.16, released on November 10, 2025. A fork of OpenOffice, LibreOffice, was created in 2010 by members of the OpenOffice.org community. OpenOffice includes applications for word processing (Writer), spreadsheets (Calc), presentations (Impress), vector graphics (Draw), database management (Base), and formula editing (Math). Its default file format is the OpenDocument Format (ODF), which it originated. It can also read a wide variety of other file formats, with particular attention to those from Microsoft Office. OpenOffice.org was primarily developed for Linux, Microsoft Windows and Solaris, and later for Mac OS X, with ports to other operating systems. It is distributed under the GNU Lesser General Public License version 3 (LGPL); early versions are also available under the Sun Industry Standards Source License (SISSL).