https://superhivemarket.com/products/gui-slider

• Consolidate shape keys, custom properties, and more into sliders for at-a-glance control.
• Tired of digging through panels to tweak shape keys and properties? GUI Slider attaches slider panels directly to your armature, putting all your parameters within reach in the viewport.
• Works with Auto Rig Pro, custom rigs, and scenes with multiple armatures — no rebuild required.