libAfterImage is an image import, storage, manipulation, and output library for X. It features support for antialiased, TrueTypei, and X text, a 128-bit internal graphics engine, in-memory RLE image compression, high quality image scaling/flipping/blending, multipoint linear gradients, superior quality image output on X drawables, and much more.
bbrb is a GUI background manager for Blackbox. It allows easy management of background images to be used with Blackbox. External programs such as xv and Esetroot are used to set background images on the root window. You can set images from the root menu or through the GUI. Also, random images can be displayed each time you start Blackbox.