CSSCO - VSCO Filters with CSS
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
CSSGram - Recreate Instagram filters with CSS filters and blend mode
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
RNI Films - Real film filters for iPhone photographers
Ralpha Image Resizer - High-speed image batch conversion tool