Speed of Light v3.8 is a comprehensive image processor/viewer with many
advanced and highly configurable features. It is excellent for viewing
GIF files. ***SHAREWARE***

Speed of Light v3.8 started as a GIF viewer with a twist. It could
display more colors and shades on a standard ST than usual. It was
also the FASTEST GIF decompressor on the ST, written in pure
assembly language. NOW, Speed of Light is still the fastest GIF
viewer, but also the fastest JPEG viewer (for machines without a DSP
chip). Version 3.8 contains all the features of version 2.x, but
also adds more image formats, more image processing features, and
many other impressive tools, including the most extensive color map
editing capabilities available on Atari systems.