webGobbler

webGobbler is a free and useful program which wanders the web, downloads random images and mixes them. This program is opensource (under the zlib/libpng license).
Features:

creates images by assembling random images.
can get random images from the internet or from a directory of your choice.
can apply various effect to images (rotation, inversion, mirror, re-superposition, emboss...).
can generate images of any size (Want to create a 10000x10000 images ? No problem !).
can output many file format (JPEG, BMP, PNG, TGA, TIFF, PDF, PCX, PPM, XBM...)
can work as a simple image generator, a webpage generator, a wallpaper changer, a screensaver...
can run in command-line mode or GUI mode.
runs under Windows (all flavors), Linux, MacOS X and any other OS where Python and the PIL library are available.
can save/load its configuration to/from the registry or a simple configuration file in your home directory.
supports proxies, with or without password.
is opensource !
is free !
The gallery is at http://sebsauvage.net/webgobbler/

Technical details and source code are available at http://sebsauvage.net/python/webgobbler/

This program also runs under Linux, MacOS X and any operating system supporting Python and the Python Imaging Library (PIL).