Manual Camera for iPhone - Custom exposure for your iPhone camera
Filtron - Create and share your own photo filters on Mac & iPhone
Snapseed - Snapseed is a photo enhancement and sharing app with a powerful suite of imaging filters and tools...
Web Photo Filter - A web component to apply Instagram-like filters to photos
Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
CSSGram - Recreate Instagram filters with CSS filters and blend mode