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Version 3.4 of Apache OpenOffice is Apache's first since Oracle donated the free office productivity suite to it in mid-2011.
Its new features include improved ODF support, including new ODF 1.2 encryption option, new spreadsheet functions, an enhanced pivot table support in Calc and enhanced graphics.
It is is available on Windows, MacIntosh and Linux and in 15 languages. For more, read Paula Rooney's blog.
Writer produces text documents.
Impress is Adobe's office presentation tool. It includes support tools: Drawing / Outline / Slides / Notes / Handouts.