Assimp

Open Asset Import Library - a FOSS C/C++ library to load various 3D file formats, including Collada, 3DS, X, Obj, STL and others. The data is read into a straightforward data structure for further processing. The functionality is augmented by various post processing tools to tailor the output data to your specific needs, compute normals, tangents, ..

ASSIMP Open Asset Import Library free Open Source 3d Model Import Library C C++ Java 3DS Collada MDL X OBJ MD2 MD3 PLY MD5 STL DXF