This post-process material bundle gives the possibility to create different style line-art or sketched-looking images. It is easy to use and versatile.
You can create outlines, different styles of hatching, on a white background, on grayscale, or on your original scene background. It also features an ink- or print-like look, as well as a toon-shader. You can generate brushstrokes or pixelate the scene. It is also possible to overlay a paper texture directly in the engine and adjust it. All features are listed in the Technical Details.
I aimed this specifically at concept artists but I can also imagine a use for it on games or anything else.
All the features can be used separately or combined freely.
The shaders work well for standard real-time rendering as well as for raytracing.
You can find full documentation and explanation of all features here.