gifovly(1) on Linux
The text 186f41bd3f5d, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
This program takes a multi-image GIF file and generates a single GIF consisting of all the images overlayed. Each image's screen position is used. Thus, you can use this together with <a href="gifpos.html">gifpos to paste together images.