Photography (471 programs)
Pros: A sophisticated filter and template system is used. Change your pictures by choosing an artistic style used by a master.
Cons: Not as free as it seems. You have to pay for larger sizes if you wish to print the image off.
Pros: Camera support for barrel-pincushion. Correct fisheye, perspective, chromatic aberration and vignetting. Comes with Photoshop and Aperture plugin.
Cons: Slightly clunky interface.
Pros: Friendly interface. Automatic and manual tools. Wide selection of features. Create professional pictures with ease.
Cons: Resource intensive. Navigating the program takes time. Limited OS support. No choice of file type when saving your work.