The native operating system of the PlayStation 3 is CellOS, which is believed to be a fork of FreeBSD;[6] TCP/IP stack fingerprinting identifies a PlayStation 3 as running FreeBSD,[7] and the PlayStation 3 is known to contain code from FreeBSD and NetBSD.[1] The 3D computer graphics API software used in the PlayStation 3 is LibGCM and PSGL, based on OpenGL ES and Nvidia's Cg.[8] LibGCM is a low le