Shade 3D for Unity is a free application that lets you create, modify and export 3D models in FBX format, formatted and ready to work with game development environments like Unity 3D.
From Shade to Unity 3
In this tutorial, you learn how set up and export simple bone based animated characters to FBX.
It is very easy to export shade scene file to Unity. In this tutorial, we look at the basics on how to import a model into Shade, perform game optimizations and then export for use in Unity 3D.