LibreOffice is a productivity suite that is compatible with other major office suites, and available on a variety of platforms. It is free software and therefore free to download, use and distribute.
Note:- This is still in Release Candidate 2 so this might break your system completely
Remove Openoffice
Before installing LibreOffice you need to remove existing openoffice from your system using the following command
sudo apt-get purge openoffice*.*
Note:- Thanks to our reader for the above command
Install libreoffice in ubuntu 11.04/10.10/10.04 using PPA
Open the terminal and run the following commands
sudo add-apt-repository ppa:libreoffice/ppa
sudo apt-get update
sudo apt-get install libreoffice
For gnome users - you also need to install the following package
sudo apt-get install libreoffice-gnome
For kubuntu users - you also need to install the following package
sudo apt-get install libreoffice-kde
Once you complete the installation open from Applications--->Office
sudo apt-get purge openoffice*.*
sudo add-apt-repository ppa:libreoffice/ppa
sudo apt-get update
sudo apt-get install libreoffice
sudo apt-get install libreoffice-gnome
sudo apt-get install libreoffice-kde