SVGALib
SVGAlib, styled as "Linux SuperVGA Graphics Library", is a legacy open-source low-level graphics library for accessing SuperVGA hardware on PC-compatible systems running on Linux, with later ports to AmigaOS and FreeBSD. SVGAlib allowed programs to change video mode to display full-screen graphics, without the use of a windowing system. Alongside X11 and the General Graphics Interface, it was one of the earliest libraries allowing graphical video games on Linux.