Flow Library is a lightweight add-on designed to manage materials and custom assets directly from Blender's sidebar. Users can import included presets or load assets from custom Blender files, utilizing thumbnail previews to apply materials directly to objects in the scene.

The toolset includes an additional module for real-time shapekey parameter adjustments. It also features a specialized mirroring workflow intended for eye meshes, where standard mirror modifiers may cause issues. This custom mirror tool operates by duplicating geometry and reflecting it across the global X-axis based on the 3D cursor position.