Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Adobe Photoshop Express - Easily edit and share your photos in no time!
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
PicsArt - Explore 100,000,000+ awesome images and photos on the web
Sculptris - Sculptris: Enter a world of digital art without barriers.