Compositor Paint
Compositor paint is a versatile node that can make almost any render, be it realistic or cartoony, look like a painting. The effect uses blurring, color-based mapping coordinates, and smart displacement all bundled up into one, easy to use node. Use the built in textures, procedurals, or any image you want to make your renders look more painted. You don't have to change your models or materials, just plug in the node in the compositor and get great results. The product comes with the node, a demo scene, and two textures pre-packaged and ready to use to stylize renders.