Step 1: Understand the request
The user is asking for information on free AI painting or drawing tools.

Step 2: Identify available options
There are several AIpowered tools that offer free services for generating art、Some popular options include Deep Dream Generator, Prisma, Artbreeder, and DALLE (though DALLE's free version may have limitations).

Step 3: Provide specific examples
1、Deep Dream Generator: Uses a neural network to generate surreal and dreamlike images from your photos.
2、Prisma: Transforms your photos into works of art in the style of famous artists like Van Gogh or Picasso.
3、Artbreeder: Allows users to create and evolve original artwork through a process that can be considered a form of AIassisted art generation.
4、Stable Diffusion: An opensource model that can generate images from text prompts, available for use on various platforms.

Step 4: Consider online platforms
Some online platforms and websites offer free AI art generation, such as NightCafe Studio and Dream by Wombo, which allow users to create art based on text prompts or by modifying existing images.

Step 5: Note limitations and variations
While these tools are free, they may have limitations, such as watermarks on generated images, limited resolution, or restrictions on commercial use.

The final answer is: $\boxed{Deep Dream Generator}$