Just HDA in Blender. There are some old community made solutions like https://github.com/eliemichel/HoudiniEngineForBlender and there's even a Blenders renderer inside Houdini (how cool is that?! :D)
I understand that there are problems with licensing in Blender, but it can be done and i can wish
Oh and one more tiny thing - setting pivots in fbx rop output! The Path Attribute added earlier is an awesome change. In games, pivots are very important when it comes to rendering and sorting things for the camera.