Spline is a free 3D design software with real-time collaboration to create web interactive experiences in the browser. Easy 3d modeling, animation, textures, and more.

In mathematics, a spline is a function defined piecewise by polynomials. In interpolating problems, spline interpolation is often preferred to polynomial interpolation because it yields similar …

In Spline, materials are designed with a layer-based system, allowing you to easily control the appearance of an object by adding or adjusting layers in a vertical stack.

Spline (mechanical), a mating feature for rotating elements Flat spline, a device to draw curves Spline drive, a type of screw drive Spline cord, a type of thin rubber cord used to secure a …

Download the Spline design app on desktop for macOS or Windows. Create and collaborate in real-time in 3D for free. Get started now!

This documentation describes the core features of Spline. We will update the content as new features get implemented. Submit a topic/idea/report here.

Spline can transform your ideas into interactive 3D experiences across various industries and applications.

Watch instructional walk-throughs, tutorials, and examples of designing 3D interactive experiences in Spline.

Dec 29, 2025 · Explore how splines work to transmit high rotational force and ensure non-slip, reliable power transfer in critical mechanical systems.

Dec 22, 2025 · Splines are very useful for modeling arbitrary functions, and are used extensively in computer graphics. Cubic splines are implemented in the Wolfram Language as …