I have an on again, off again, relationship with Osfoora for Mac. I love the UI and the fact that it actually works well, but I have not been a big fan of the icon, or lack of streaming API.
Both of those things changed today. The latest version of Osfoora supports the streaming API (finally) and they updated the icon. The icon is better, but not sure if I like it.
The streaming API addition alone is enough for me to give Osfoora a go again as my full-time Mac Twitter client.