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Free Addons for Blender
this addon will add the Blender 2.7x render buttons to Blender 2.9x. Not testet on 2.8x.
This addon add the FBX and Alemgic button to the head in blender. the Alembic button also set the end frame to 1.
this addon add a button under the Hair Dynamic panel to apply current Dynamics hare and set current frame to 1 and turn of dynamic hair.