I found myself wanting exactly this recently - a single conversation stream for each IM peer and multiple views into the stream, synchronized between themselves

I found myself wanting exactly this recently - a single conversation stream for each IM peer and multiple views into the stream, synchronized between themselves. Found Trillian beta that appears to support it, but I am very wary of it, because previous versions were the buggiest software products I had a misfortune to use. Any other implementations with native clients and with the hook ups into ICQ and others?