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SHOW ALL QUESTIONS (OOo), commonly known as OpenOffice, is a discontinued open-source office suite. Active successor projects include LibreOffice (the most actively developed[10][11][12]), Apache OpenOffice,[13] Collabora Online (enterprise ready LibreOffice) and NeoOffice (commercial, and available only for macOS).

Quick facts: Original author(s), Developer(s), Initial rel...
Original author(s)StarOffice by Star Division (1985–1999)
Developer(s)Sun Microsystems (1999–2009)
Oracle Corporation (2010–2011)
Initial release1 May 2002; 20 years ago (2002-05-01)[1]
Final release
3.3.0[2] Edit this on Wikidata / 17 January 2011
Written inC++[3] and Java
Operating systemLinux, OS X, Microsoft Windows, Solaris[4][5]
PlatformIA-32, x86-64, PowerPC, SPARC[4]
SuccessorApache OpenOffice
Size143.4 MB (3.3.0 en-US Windows .exe without JRE)[6]
Standard(s)OpenDocument (ISO/IEC 26300)
Available in121 languages[7]
TypeOffice suite
LicenseDual-licensed under the SISSL and GNU LGPL ( 2 Beta 2 and earlier)[8]
GNU LGPL version 3 ( 2 and later)[9]

OpenOffice was an open-sourced version of the earlier StarOffice, which Sun Microsystems acquired in 1999 for internal use. Sun open-sourced the OpenOffice suite in July 2000 as a competitor to Microsoft Office,[14][15] releasing version 1.0 on 1 May 2002.[1]

OpenOffice included a word processor (Writer), a spreadsheet (Calc), a presentation application (Impress), a drawing application (Draw), a formula editor (Math), and a database management application (Base).[16] Its default file format was the OpenDocument Format (ODF), an ISO/IEC standard, which originated with It could also read a wide variety of other file formats, with particular attention to those from Microsoft Office. was primarily developed for Linux, Microsoft Windows and Solaris, and later for OS X, with ports to other operating systems. It was distributed under the GNU Lesser General Public License version 3 (LGPL); early versions were also available under the Sun Industry Standards Source License (SISSL).

In 2011, Oracle Corporation, the then-owner of Sun, announced that it would no longer offer a commercial version of the suite[17] and donated the project to the Apache Foundation.[18][19] Apache renamed the software Apache OpenOffice.[13]