Spline is a free 3D design software that allows users to create interactive web experiences right in the browser ... It offers various types of creator tools and APIs such as; flythrough videos, NeRF ...
Cross-platform (desktop, mobile, console) 3D and 2D game engine. Powerful visual editor. Support for glTF, X3D, Spine and more. Fast clean code using modern Pascal. Free and open-source.