Swatches - A fun and accurate color picker for the real world
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
ColorSnapper - The missing color picker for Mac.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Colordot for iOS - A color picker for humans.
Ralpha Image Resizer - High-speed image batch conversion tool