The Open Asset Import Library (short name: Assimp) is a portable Open-Source library to import various well-known 3D model formats in a uniform manner. The most recent version also knows how to export 3d files and is therefore suitable as a general-purpose 3D model converter. See the feature-list. open3mod is a Windows-based model viewer. It loads all file formats that Assimp supports and is perfectly suited to quickly inspect 3d assets. Assimp aims to provide a full asset conversion...
PixelLight is a cross-platform application framework
PixelLight is a cross-platform application framework for any kind of 3D applications like games, interactive simulations or visualizations. It's written in C++ and has been designed with flexibility and extensibility as one of it's main goals.