Programs: Photoshop, GIMP, PSP, and many more
This set of exposed brick as transparent PNGs can be used in any program that will support *.PNG files. Photoshop, GIMP, PSP, and many more. These images the low resolution version. If you want the high resolution versions, you can download them here: [link]
The first download are all of the red bricks, and the second is made up of the multicolored, more grayish bricks. Alternately, for those that dont need high resolution, I have a low res version, where the images are about 800 x 800 pixels.