LibreOffice is the free power-packed open source personal productivity suite for Windows, Macintosh and Linux, that gives you six feature-rich applications for all your document production and data processing needs.
LibreOffice 4 is the most recent stable version of our software and marks a major milestone for the LibreOffice project.
The new Libre Office version not only lets you create documents and presentations (using Impress) but also collaborate with other people in the creative process.
The main website http://www.libreoffice.org/default
See on www.libreoffice.org