Blender Add-on overview: Brush Manager for Blender ( free or paid ) - YouTube
Free Blender Sculpting Brushes : r/blender
Blend Swap | Blender 2.8 Brushpack
Photoscanned rock-brushes for free (CC0) - Off-topic Chat - Blender Artists Community
Georg's Procreate Brushes - [Free update/new set] Procreate Blender Set with 24 new painting and blending brushes • The color runs out at the end of each brush stroke. To control the