.RLE File Extension

4 or 8-bit RLE-encoded bitmap image; basically a .DIB file that uses RLE (Run-length encoding) compression; common image format used in early versions of Windows and CompuServe software.

The RLE image format is the native format used by the Utah Raster Toolkit, a collection of programs and C routines for managing raster images.

File created by Golly, a life-simulation game based off of Conway's Game of Life concept; saves the state of a simulation, which is stored as a two-dimensional grid; can also be saved as a compressed RLE file that uses the .RLE.GZ extension.