ofAssimpModelLoader addon permits loading to memory and processing 3D models in a convenient and unified format. This addon is mostly a wrapper of the "Open Asset Import Library" (assimp), in its version 5.2 https://github.com/assimp/assimp. For an example see openFrameworks/examples/3d/assimp3DModelLoaderExample. At least, these model formats are supported: 3DS ASE DXF GLTF FBX HMP MD2 MD3 MD5 MD