OpenOffice.org

Openoffice seems to work fine on the XO under Xfce.

You can install just the components you need. To find out what is available, once you have Xfce or some other desktop environment running, start a terminal and type the following at the shell prompt:

 yum list|grep openoffice

This will produce about eighty lines of output that should start something like this:

 openoffice.org-calc.i386      1:2.3.0-6.4.fc7   olpc_koji-ship2
 openoffice.org-core.i386      1:2.3.0-6.4.fc7   olpc_koji-ship2
 openoffice.org-draw.i386      1:2.3.0-6.4.fc7   olpc_koji-ship2
 openoffice.org-impress.i386   1:2.3.0-6.4.fc7   olpc_koji-ship2
 openoffice.org-writer.i386    1:2.3.0-6.4.fc7   olpc_koji-ship2
 ...

Then just use yum to install whichever packages you want (use package names without the ".i386" part). For example (as root):

 yum install openoffice.org-writer
 yum install openoffice.org-calc
 yum install openoffice.org-draw openoffice.org-impress 

By the way, most of the space is taken up by the infrastructure; adding more components takes up little extra space.