Wavey Freestyle is an add-on that provides a dedicated sidebar panel to configure and customize stylized line effects using Blender's Freestyle rendering engine. It allows users to toggle Freestyle on or off directly from the 3D viewport and provides specific controls to generate wavy outlines around 3D models.

The tool includes sliders to adjust wave characteristics such as wavelength, amplitude, and phase. Additionally, it offers a bezier curve error setting to smooth the generated lines for cleaner stylized strokes. The add-on is designed to streamline the process of applying non-photorealistic (NPR) outlines to objects before final rendering.