OpenOffice.org, commonly known as OOo or OpenOffice, is an open-source application suite whose main components are forword processing, spreadsheets, presentations, graphics, and databases. OpenOffice is available for a number of different computer operating systems, is distributed as free software and is written using its own GUI toolkit. It supports the ISO/IECstandard OpenDocument Format (ODF) for data interchange as its default file format, as well as Microsoft Office formats among others. As of June 2011, OpenOffice.org supports over 120 languages. As free software, users are free to download, modify, use and distribute OpenOffice.org. LibreOffice is a fork of OpenOffice.org which was formed by many of the original developers of OpenOffice.
OpenOffice.org originated as StarOffice, an office suite developed by StarDivision and acquired by Sun Microsystems in August 1999. The source code of the suite was released in July 2000 with the aim of reducing the dominant market share of Microsoft Office by providing a free and open alternative. penOffice.org was an open-source version of the StarOffice suite, with development sponsored primarily by Sun Microsystems. After acquiring Sun in 2010, Oracle Corporation stopped supporting commercial development and in June 2011 contributed the suite to the Apache Incubator to become a project of the Apache Software Foundation.
The project and software are commonly known as OpenOffice, but this term is trademarked both in the Netherlands, by a company co-founded by Wouter Hanegraaff, and, independently, in the UK by Orange UK. As a result, the project adoptedOpenOffice.org as its formal name
Originally the German company StarDivision developed the application as the proprietary software suite StarOffice. In 1999 Sun Microsystems purchased the code. In August 1999 version 5.2 of StarOffice was made available free of charge.