SmillaEnlarger is a small graphical tool ( based on Qt ) to resize, especially magnify bitmaps in high quality. ( The used algorithm is an invention of my own )
The Rasterbator creates huge, rasterized images from any picture. Upload an image, print the resulting multi-page pdf file and assemble the pages into extremely cool looking poster up to 20 meters in size.
With Picnik you can quickly edit all your online photos from one place. It's the fastest, easiest way to fix underexposed photos, remove red-eye, and apply special effects to your photos ~ from artsy to comical.