OpenOffice.org is the open source project through which Sun Microsystems is releasing the technology for the popular StarOffice productivity suite. It is an international office suite that will run on all major platforms and provide access to all functionality and data through open-component based APIs and an XML-based file format. It establishes the necessary facilities to make this open source technology available to the developer community.

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。

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)