A simple online version of MS paint, direct link is here

We're a small Swedish company. This is our first website. Please be nice. Creates animations from (your) static images.

This is actually a windows program, but it's open source and does scene creation.

Create characters and movies containing them online.

"building block" approach to building animations. A new language to describe animations makes them go, aimed for ages 8+, Wintel and OSX.

Precanned scenes and characters, online tool converts your text and directions to a movie.