Viewer for 3D and 2D model formats supported by the Castle Game Engine:

• glTF
• X3D
• VRML
• Sprite sheets in Starling, Cocos2d and Castle Game Engine formats
• Spine JSON animations (from Spine or Dragon Bones)
• Collada
• OpenInventor
• 3DS
• MD3 (Quake 3)
• castle-anim-frames (Castle Game Engine animations)
• Wavefront OBJ
• Videoscape GEO
• STL

Many features for navigating and processing the scene are available:

• Examine, Walk, Fly mode.
• Conversion of some model formats (right now: all models can be saved to X3D or STL; coming soon: option to save to glTF)
• Taking screenshots (also in batch mode).
• Rendering features include physically-based rendering, mirrors, shaders, screen effects, bump mapping, shadows, gamma correction. They are all possible by using proper glTF or X3D features. See https://github.com/castle-engine/demo-models for many examples.

This is an open-source software. You can download sources, and read more documentation, on https://castle-engine.io/castle-model-viewer . If you have any questions, talk with us on Discord or forum.