Spline, Inc.

Spline is a web-based 3D design platform founded in 2020 and headquartered in San Francisco, California. The platform allows designers and developers to build interactive 3D scenes, animations, and experiences directly in a browser-based editor without requiring coding knowledge.

Spline's core product includes a real-time collaborative editor, a component and asset library, and export options targeting web embeds, React, iOS, and Android. The platform added AI-assisted features for generating 3D objects and scenes from text prompts. It is used by product designers, web developers, and motion designers to produce 3D UI elements, landing page visuals, and interactive prototypes.

Spline has grown primarily through product-led adoption and a free tier that allows individual designers to publish projects. The company has maintained a relatively small team since its founding. Specific funding amounts and investor details have not been publicly disclosed.