Equinox 3D ( http://www.equinox3d.com/News.html ) just released another update that includes some pretty cool features. I haven’t used this much since it’s last update about a year ago, but its developer claims its Collada importer / exporter is pretty complete, which makes me wonder if it might be used to rig and animate Blender models for Unity? Anyone else try this recently?
According to their download page, it is Intel Macs only. That leaves me out 
AGhost
Sorry, didn’t notice that. You could of course try to use the Linux version, but that might be too much of a PIA if you don’t already have Linux installed.