Yup there is OO for SL or check out the 1.0 BE Sabayon has everything from Cad to power point / developer etc stuff in it.
If it works in gentoo it works here.
Portato or the older SL versions has Kuroo -> discontinued and this is the package manager or text as root in terminal " emerge --sync ; emerge portage ; layman -S " and once this is done it is up to date use " emerge -s office " or portage and browse. http://gentoo-portage.com/http://gentoo-portage.com/Search?search=office
O ja and any source code can be compiled here as well if you need too.
Hope this helps.