http://www.poweredbygamespy.com/2011/08/26/gamespy-welcomes-windows-unity-developers/
Sweet! Strange there havn’t been more replies to this. Been a fan of their API ever since I found it a month or two ago but the C++ only shied me away from actually using it. This is great news for me and I’m looking forward to using it 
The full API feature set isn’t in it yet, but I like the way it’s going. It should work without having Unity Pro, too, if I’m not mistaken.