ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Open Peeps - A hand-drawn illustration library.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Control Illustrations - 108 free flat illustrations with customizable characters
Ralpha Image Resizer - High-speed image batch conversion tool
DrawKit - MIT licensed SVG illustrations, in 2 styles