PAINT.NET is one of the best freeware alternative available for expensive Adobe Photoshop. The user interface of this software is brilliant and very easy to understand. It supports all major features of any expensive photo editing software like layers, unlimited undo’s, special effects, and many other powerful tools. Editing multiple images becomes very easy with the tabbed interface as each image is opened in a separate tab. Many special effects are included for enhancing your images. Everything from blurring, sharpening, red-eye removal, distortion, noise, and embossing are included, a unique 3D Rotate/Zoom effect that makes it very easy to add perspective and tilting is also included .