is a popular community-driven plugin for GIMP that brings "Photoshop-style" layer styling to the open-source editor. While modern versions of GIMP (2.10 and later) have begun integrating similar "GEGL" filters, many designers still rely on the Script-Fu version for its classic workflow and specialized tools. Key Layer Effects

Adds a luminous "neon" halo around or inside the perimeter of an object.

Creates a shadow behind or inside an object to add depth and elevation.

Adds highlights and shadows to edges to create a 3D effect. It is widely considered the most useful tool in the set for creating glass or metal textures.