Artpad is a great simple application that lets you paint and draw, and then save your creation (not to mention letting you replay your creative process). It’s been on The Best Art Websites For Learning English list.
Unfortunately, it hasn’t been functioning for the past year or two. I should rephrase that — you have been able to draw and paint with it for that time, but it hasn’t been able to save your creation. However, I recently checked it, and it all seems to be working again, and paintings are saved — each one is given a unique url address.
With luck, it will continue to work….