OBJParser
OBJ File Parser Powered by Boost Spirit
Brief
OBJParser is a fast, efficient, and open-source modern C++ parser for the OBJ and MTL file formats. It supports fully both file standards (OBJ, MTL) as well as unofficial, but widely adopted, optional statements.
It has a dependency of Boost C++, specifically the Spirit library. Spirit itself is a header-only library and so no external binaries are required. There is also optional support for the Boost Iostreams library to make use of memory-mapped files. Employing memory-mapped files can result in performance improvements, but necessitates the need for the Iostreams binary.
More information of dependencies and other topics may be found in the documentation.
Website
Find more information and downloads at http://www.vertexfragment.com/objparser/index.html