LibreOffice Portable is a powerful office suite. Translated into more than 30 languages. LibreOffice is free and is open source, so you can free to download, use and learn LibreOffice. LibreOffice free for private and for educational or commercial use. It can be used without any licensing fees to your family, friends, colleagues, students, employees, and so on.
OpenOffice Portable is a multi-platform office productivity suite. It includes the key desktop applications, such as a word processor, spreadsheet, presentation manager, and drawing program, with a user interface and feature set similar to other office suites. Sophisticated and flexible, OpenOffice also works transparently with a variety of file formats, including those of Microsoft Office.