I wish there were more standalone 3D renderers like this.
This, Ogre3D[0], and Wicked Engine[1] seem to be the last of their kind
My hunch is that by sticking to just Windows/Linux/consoles and firmly-decidedly-skipping other cross-platform platforms such as Apple's Metal, mobile's OpenGL, WebGL/WebGPU/WebAssembly, it is kept maintainable, unbuggy (not 100s of bug-tagged Open Github Issues) and capable of ongoing rapid feature iteration.
LibGDX, jMonkeyEngine, FNA, MonoGame, Silk.NET, Vortice