I'm doing libhildon. My copy of libhildondesktop (cordia) should be pretty similar to cssu and its a lot smaller. About to start getting some code ready for commit. Will add comment in each commit if there are outstanding issues. osso-uri-l10n-public is in free repo as opposed to non-free or nokia-binaries. I would check the license of libhildonmime0 and rtcom-messaging-ui. Off hand I'm going to guess rtcom-* is closed but hildonmime is gpl2.