The macOS Mojave is the fifteenth major release of macOS run by Apple Mac desktop computers. It was unveiled in June, 2018 at WWDC, but became available for the public only in October, 2018. The critical upgrade of the macOS Mojave relates to the graphics framework. Apple ceased supporting OpenGL and OpenCL and switched to Metal API instead. Metal libraries are more efficient when it comes to sharing the workload between a CPU and GPU. Since almost all Mac devices now feature the integrated GPU and support an external GPU, Metal seems to be an obvious choice. Although, it cut off the Macs back from 2011 and earlier.