Bluto is an app that grew out of IBM, based on Adobe Air, that combines Twitter and Lotus Connections feeds into a single client. You can cross point to both or choose a single site to post to. The basics are there, like follow, unfollow, retweet and reply. More advanced features are not, and likely won’t be coming as this was just placed out on a whim with no promise of updates.
IBM runs their own internal Twitter like system called BlueTwit, but with the inclusion of microblogging capabilities in Lotus Connections, a client like this was needed. You can see more of a review from the IdoNotes blog.