Recommended: Alert Thingy
Just found Alert Thingy today. It’s surprisingly good. It shows status updates from twitter and facebook, and a few other common social apps. It also lets you post status updates to these services. It runs on Adobe AIR, so it is definitely a memory black hole just like every other app built in AIR. But it feels responsive and well put together in a way that almost all other AIR apps are not. It looks a lot like a native OSX app, which is really nice. One complaint is that it comes with the opacity turned down to 80% for some reason. I thought this effect was cool a few years ago, but now I have no need for apps to be anything less than fully opaque.