Spline

Spline is a browser-based 3D design platform that enables users to create, edit, and publish interactive 3D content in real time without needing to install any software. It functions both as a 3D modeling tool and a collaborative workspace, allowing multiple team members to work on the same project simultaneously through live sync and shared editing. The core functionality revolves around building production-ready 3D experiences that can be embedded directly into websites, applications, or digital products. Users start by accessing a 3D scene in their web browser, where they can manipulate objects using intuitive controls: dragging to orbit the camera, selecting and transforming shapes, and applying materials and textures. The tool supports a full range of 3D modeling operations, including primitive shapes (cubes, spheres, cylinders, planes, toruses), extrusion from 2D paths, boolean operations, lathe surfaces, and subdivision modeling. Beyond basic geometry, Spline allows users to import external 3D models in common formats such as GLTF, OBJ, and FBX, and then further edit them within the platform. A major part of Spline’s appeal is its real-time collaboration feature. Users can invite others to a project via a shareable link, and all participants see changes appear instantly as they happen. This is similar to how Google Docs works, but for 3D scenes. Each collaborator can move objects, adjust properties, or add animations, and the state is synchronized across all connected clients. This makes it particularly useful for design teams that need to iterate on interactive prototypes, such as product designers creating 3D mockups for client presentations, or marketing teams developing branded 3D visuals for campaigns. Spline also includes a powerful animation system. Users