Spline is a web-based 3D design and collaboration platform that enables users to create 3D scenes, edit materials, model 3D objects, and animate designs in real-time. Spline offers tools for 3D modeling, sculpting, and vector editing, as well as materials and camera controls. The platform also provides collaborative features, such as real-time team collaboration, individual permissions, and project organization. Spline is trusted by teams around the world for its ease of use and flexibility.