GIMP Online - Powerful graphics editor in the cloud
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
chaosMachine - One-click unique graphics generator
Sculptris - Sculptris: Enter a world of digital art without barriers.
Asteroid Video - Create high-resolution videos in just a few taps
Misfit Model 3D - Misfit Model 3D is a 3D model editor that basically operates with triangle-based models.