Short description of ABF Screen Saver (OpenGL) 2.0: ABF Screen Saver is a simple screen saver that works on any 32-bit version of Microsoft Windows. This is a freeware program, so you can freely download, use or distribute it. It is built using the OpenGL technology, but screensaver works great on any video card, even if the hardware doesn't support OpenGL. This screen saver is a promo demo of our abilities to make any screensaver or other software.