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.
Filtron - Create and share your own photo filters on Mac & iPhone
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Unused CSS - Easily find and remove unused CSS rules
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.