Vulkan

Not to be confused with that one race from Star-Trek, Vulkan is a graphics API. It handles all the fancy-shmancy effects and rendering for games or software that requires the use of your GPU to render things. The idea of Vulkan is to have very little software overhead to allow you to get the most from your GPU, but the cost of this requires the developer to create the entire pipeline from scratch. This can lead to wildly different results from software to software. It is also Cross-Compatible with pretty much everything.