Alternatives to Adobe Photoshop
Here I am listing some of alternative applications for Adobe Photoshop.
These are the online tools for Photo Editing Lovers.
Pixlr is a online image editor, that means that you can upload your images and edit them in your browser. It is built in Flash and you need to have a Flash plug in (get flash) to get it to work.
FotoFlexer is the world's most advanced online digital photo editor. It performs advanced effects previously only available to professionals using expensive software. FotoFlexer was founded by Arbor Labs, a team of graduate students and alumni from the Center for Entrepreneurship and Technology, University of California at Berkeley (and just one MIT/Stanford alum too).
SumoPaint offers professional and easy to use tools for creating and editing images within a browser.
Splashup, formerly Fauxto, is a powerful editing tool and photo manager. With all the features professionals use and novices want, it's easy to use, works in real-time and allows you to edit many images at once. Splashup runs in all browsers, integrates seamlessly with top photosharing sites, and even has its own file format so you can save your work in progress.
Paint.NET is free image and photo editing software for computers that run Windows. It features an intuitive and innovative user interface with support for layers, unlimited undo, special effects, and a wide variety of useful and powerful tools.