Better FBX Support in Blender Using The Autodesk FBX SDK – GameFromScratch.com
Better FBX Importer & Exporter Add-on - Released Scripts and Themes - Blender Artists Community
How to make Unity's FBX Exporter working with Blender (Better FBX Importer & Exporter Blender Addon) - YouTube
When should you use FBX 3D file format ?
I've created an FBX exporter for Blender that exports FBX files compatible with Unity's coordinate and scaling system. No more unwanted rotations, no more clutter with FBX options, no need to modify