Spline is a parametric curve generator that produces over 40 distinct mathematical, fractal, and chaotic shapes. The available splines include spirals, attractors, knots, and L-systems, providing a range of procedural curve options suitable for motion graphics and scientific visualization.

The tool features parametric controls for symmetry, waves, height modulation, and fractal depth. It includes category-based organization for the generated shapes and operates through a custom tab in the 3D viewport. Additional features include content-aware editing and a Splice Preset Library for managing spline configurations.