I'm currently mucking about with a number of different projects but below you'll find a list of all the things I've had a chance to release so far (even if it's only one).

MetroTwit 

I've been working on MetroTwit with Winston Pang and Long Zheng for what seems like an eternity, but it's been (and still is) amazing fun to be coding such an awesome looking twitter client.  Check it out at metrotwit.com