Image jigsaw is a jQuery plugin to easy convert any image to image based jigsaw puzzle.
PicStrips adds a little style to your images to help them stand out from the crowd. You can split your images into any number of strips, specify the whitespace between each strip and also the amount of vertical whitespace added at the top and bottom of alternate strips.
Image Color-Up is a jQuery plugin to add effects on mouse hover to your images: monochrome/greyscale, sepia, negative, darken or lighten images.
vintageJS is a jQuery plugin that uses the html5 canvas element to add a great vintage look to your photos. It comes with three effect-presets and can be customized very easily.