OpenOffice原是Sun公司的一套商業級Office軟件：StarOffice，經過Sun公司公開程序碼之后，正式命名為OpenOffice發展計劃，并由許許多多熱心于自由軟件的人士共同來維持。讓大家能在MS OFFICE之外，還能有免費的Office可以使用。OpenOffice是個整合性的軟件，里面包含了許許多多的工具，其功能絕對不比微軟的MS Office還差，不但可以有Word一樣的字處理，制作簡單的圖形，更有功能強大的圖表功能，也能編寫網頁，還可以做出MS Office中很難處理的數學符號等等，支持了XML、微軟的doc、Excel、ppt文件等格式。

OpenOffice.org 是一套跨平臺的辦公室軟體套件，能在 Windows、Linux、MacOS X (X11)、和 Solaris 等作業系統上執行。它與各個主要的辦公室軟體套件相容。OpenOffice.org 是自由軟體，任何人都可以免費下載、使用、及散布它。下列是 OpenOffice.org 的主要元件：
Writer (文書)
Impress (簡報) 
Calc (試算表)
Draw (繪圖) 
Math (公式)
Base (數據庫管理) 

OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites, the product is free to download, use, and distribute. OpenOffice.org is sponsored by Sun Microsystems, which is the primary contributor of code to the Project. Over 180,000 people from every nearly every curve of the globe have joined this Project with the idea of creating the best possible office suite that all can use. They do so under the auspices of "open source."

Features:
Writer – a word processor you can use for anything from writing a quick letter to producing an entire book.
Calc – a powerful spreadsheet with all the tools you need to calculate, analyse, and present your data in numerical reports or sizzling graphics.
Impress – the fastest, most powerful way to create effective multimedia presentations.
Draw – lets you produce everything from simple diagrams to dynamic 3D illustrations.
Base – lets you manipulate databases seamlessly. Create and modify tables, forms, queries, and reports, all from within OpenOffice.org
Math – lets you create mathematical equations with a graphic user interface or by directly typing your formulas into the equation editor.

This release builds upon the previous releases with multiple bugfixes and new features, such as the new chart options, report designer, accessibility improvements and translations.

Release Notes：http://development.openoffice.org/releases/2.3.0.html
官網：http://www.openoffice.org

Download: OpenOffice.org v2.3.1 RC1 For Windows(簡體中文,含JRE)
Download: OpenOffice.org v2.3.1 RC1 For Linux(簡體中文,含JRE)

Download: OpenOffice.org v2.3.1 RC1 For Windows(English,含JRE)
Download: OpenOffice.org v2.3.1 RC1 For Linux(English,含JRE)

Download: OpenOffice.org 2.3.0 Final for Windows (English,105.9 MB)
Download: OpenOffice.org 2.3.0 Final for Linux (English,136.6M)

Download: OpenOffice 2.2.1 中文正式版
FTP: OpenOffice 2.2.1 中文正式版(FTP)