UG_IO is a suite of libraries for 2D and 3D unstructured mesh, CAD, solution, and function file I/O. UGC is a stand-alone unstructured 2D and 3D mesh, solution, and function file conversion based on the UG_IO library suite. generation code. Executables for AFLR2C, AFLR3, AFLR4, and BLOOM3 also use the UG_IO library suite for file I/O.
UG_IO Documentation